NCERT Class 6 Science Chapter 2 Sorting Materials Into Groups Long Question And Answers

Question 1. Chalk, iron nails, wood, aluminium, candles, and cotton usually look different from each other. Give some properties by which we can prove that these materials are different.
Answer: We can differentiate these materials based on lustre, hardness, softness, roughness or smoothness.

Question 2. Sugar, salt, mustard oil, sand, sawdust, honey, chalk powder, petals of flowers, soil, copper sulphate crystals, glucose, and wheat flour are some substances given to Paheli. She wants to know whether these substances are soluble in water or not. Help her in identifying soluble and insoluble substances in water.
Answer: Substances soluble in water are sugar, salt, honey, copper sulphate crystals, and glucose. Substances insoluble in water are mustard oil, sand, sawdust, chalk powder, petals of flowers, soil, and wheat Hour.

Read and Learn More Class 6 Science Question And Answers

Question 4. Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants?
Answer: Oxygen gas dissolves in water, i.e. oxygen gas is soluble in water. The plants and animals which live in water use the oxygen dissolved in water for respiration. Thus, oxygen gas dissolved in water is very important for the survival of animals and plants that live in water.

Question 5. Kavita bought new silver anklets. After a month, she found that the anklets had lost their lustre and turned black. She had doubts that they were not made up of pure silver. But her mother told her to wash it with lemon juice. She washed her silver anklets and found that the silver anklets had got the lustre back. Read the above passage and answer the following questions.
Answer:

1. Do you think that the anklets are not of pure silver?
Answer: No, the anklets were made up of pure silver.

2. Why silver anklets lose their lustre after some time?
Answer: Silver anklets lost their lustre and appear dull, because of the action of air and moisture On them

Question 6. Rohan and his friends planned to play a cricket match on Sunday morning. But, by chance on Saturday, Rohan got a high fever. Due to high fever, his parents did not allow him to play cricket. So, Rohan was very upset.  But his father suggested to him that he could see the cricket match that his friends were playing in the park through a glass window, although the window would be closed. Read the above passage and answer the following questions.
Answer:

1. How Rohan was able to see the cricket match, although the window was closed?
Answer: Rohan was able to see the cricket match through
glass window panes which were transparent

2. Write different types of materials based on their transparency.
Answer: Based on transparency different types of materials are

• Transparent materials like glass, water air.
• Opaque materials like wood, cardboard, and metal containers.
• Translucent materials like oil paper, butter paper

Question 7. 

Answer:

1. Why is Sachin not able to see through the wall?

1. The wall is transparent
2. The wall is translucent
3. The wall is opaque
4. The wall is reflective

Answer: 3. The wall is opaque

2. Name the device Sachin is using to see the tree on the other side of the wall.

1. Microscope
2. Periscopes
3. Telescope
4. Electroscope

Answer: 2. Periscopes

3. Can we use cardboard instead of a plane mirror in this device? Give a reason for your answer. are often used in national defence. Describe two possible uses of this device by the military.
Answer: No, cardboard cannot be used as it does not have a shiny surface. Hence, it reflects only a small amount of light.

4. Periscopes are often used in national defence. Describe two possible uses of this device by the military.
Answer:

• Perioscopes are used in submarines.
• Soldiers use them to spot enemies in trenches.

Question 8. Namita has three boxes with the same thickness. She places a burning candle inside each box. The images show how Namita was able to view the candle through each box.

Answer:

1. Which box is made of an opaque material?
Answer: Box 3 is made up of an opaque material as the candle is not visible

2. Namita replaced box 1 with a thicker box made of the same material and repeated the activity. Will there be any change in the results of the activity? Explain your answer.
Answer: With the increase in thickness, the candle will not be visible.

Question 9. Aqeel poured liquid 1 and liquid 2, each into a jar of water. He stirred the mixture in each jar with a spoon. He allowed the mixtures to rest for 10 mins.

Which of the following must Aqeel keep the same in his activity? Circle ‘Yes’ or ‘No’ for the correct response

Are liquids and 2 soluble in water? Write Yes or No in the space given in the table below.

Answer:

1. Yes, Yes, No
2. Yes, No

Question 10. Name five objects which can be made from wood.
Answer: Five objects which can be made from wood are

1. Door
2. Window
3. Chair
4. Table
5. Boat

Question 12. Select those objects from the following that shine: Glass bowl, plastic toy, steel spoon, cotton shirt
Answer: Among the given objects, glass bowls and steel spoons are shiny objects which are also called lustrous materials.

Question 13. Match the objects given below with the materials from which they could be made. Remember, an object could be made from more than one material and a given material could be used for making many objects.

Answer: The correct table is shown below

Question 14. State whether the statements given below are True or False.

1. Stone is transparent, while glass is opaque.
2. A notebook has lustre, while an eraser does not.
3. Chalk dissolves in water.
4. A piece of wood floats on water.
5. Sugar does not dissolve in water.
6. Oil mixes with water.
7. Sand settles down in the water.
8. Vinegar dissolves in water

Answer:

1. False, glass is transparent because it allows light to pass through it while stone is opaque because it does not allow light to pass through it.
2. False, notebook and eraser do not have any lustre.
3. False, chalk is insoluble in water.
4. True
5. False, sugar dissolves in water.
6. False, oil does not mix with water it floats on water.
7. True
8. True

Question 15. Below are the names of some objects and materials: Water, basketball, orange, sugar, globe, apple and earthen pitcher. Group them as

1. Round shaped and other shapes.
2. Eatables and non-eatables.

Answer: Objects or materials which are in the form of circles, are known as round shaped.

The substances which we can eat, are known as eatables otherwise it is known as non-eatables

Question 16. List all items known to you that float on water. Check and see if they will float on oil or kerosene.
Answer:

A list of some items that float on water are

1. Wood
2. Wax
3. Thermocol
4. Oil
5. Ice
6. Plastic

A list of items that float on oil or kerosene are

1. Wood
2. Paper
3. Wax
4. Plastic
5. Thermocol

Question 17. Find the odd one out from the following

1. Chair, Bed, Table, Baby, Cupboard
2. Rose, Jasmine, Boat, Marigold, Lotus
3. Aluminium, Iron, Copper, Silver, Sand
4. Sugar, Salt, Sand, Copper sulphate

Answer:

1. Except baby, all others are non-living things.
2. Except for the boat, all others are flowers.
3. Except for sand, all others are metals.
4. Except for sand, all others are soluble in water.

NCERT Class 6 Science Chapter 2 Sorting Materials Into Groups Short Question And Answers

Question 1. Give three common characteristics of materials.
Answer: The three common characteristics of materials

• All materials occupy space.
• All materials possess mass.
• All materials can be felt by one or more of our sense organs.

Question 2. Give the name of two objects for each which can be made from the following materials

1. Glass
2. Iron
3. Gold
4. Aluminium

Answer:

1. Glass Window pane, tumbler.
2. Iron Rods, iron nails
3. Gold Jewellery, coins.
4. Aluminium Aeroplane, window frames.

Question 3. List some materials that are used for making more than one type of object.
Answer: List of some materials that are used for making more than one type of an object as follows

Wood chair, table, plough, bullock cart and its wheels. Paper books, notebooks, newspapers, toys, calendars. Leather shoes, belts, wallets, bags and photo albums. Plastic buckets, lunch boxes, toys and pipes.

Question 4. Why paper-like materials are not used for cooking vessels?
Answer: Cooking vessels are made of a material with a high burning point but paper catches fire easily. Hence, it would not be wise to use paper-like materials for cooking vessels.

Question 5. Why are different materials used for making different objects?
Answer: Different materials have different properties. Materials are chosen to make objects depending on their properties and the purpose for which the object is to be used.

Question 6. Why are handles of utensils made from wood or plastic?
Answer: The handles of utensils are made from wood or plastics because these materials do not heat us easily unlike iron, aluminium, etc. and our hands do not burn while handling these utensils when they are hot.

Question 7. It was Paheli’s birthday. Her grandmother gave her two gifts made up of metals, one old dull silver spoon and a pair of lustrous gold earrings. She was surprised to see the difference in the appearance of the two metals. Can you explain the reason for this difference?
Answer: The silver spoon on long exposure to moist air has lost its shine and appears dull whereas gold does not tarnish.

Question 8. Which among the following materials would you identify as soft materials and why?
Ice, rubber band, leaf, eraser, pencil, pearl, a piece of wooden board, cooked rice, pulses and fresh chapati.
Answer: Materials which can be compressed or scratched easily – are called soft materials. Among the given materials rubber band, leaves, erasers, cooked rice and fresh chapati are soft materials because they can be compressed or scratched easily

Question 9. You are provided with the following materials: Turmeric, honey, mustard oil, water, glucose, rice flour, and groundnut oil. Make any three pairs of substances where one is soluble in the other and any three pairs of substances where one substance is insoluble in the other.
Answer: Soluble Substances

• Honey in water
• Groundnut oil in mustard oil
• Insoluble substances
• Turmeric in water
• Mustard oil in water

Question 10. Give two examples of gas which dissolve in water.
Answer: Two examples of gas that dissolve in water are as follows

• Oxygen gas dissolved in water is very important for the survival of animals and plants that live in water.
• Carbon dioxide also dissolves in water.

Question 11. Give five examples of each of the objects that float and sink in water.
Answer: Objects that float in water are plastic, sawdust, dry leaves, ice, and kerosene. Objects that sink in water are copper, silver, gold, stone, and chalk.

Question 12. Our palm is translucent. Explain with an activity.
Answer: Cover the glass of a torch with your palm in a dark area. Switch on the torch and observe from the other side of the palm. We see that the light of the torch passes through the palm, but not clearly. This demonstration shows that our palm shows the property of translucent when a strong beam oflight passes through it.

NCERT Class 6 Science Chapter 2 Sorting Materials Into Groups Very Short Answer Type Questions

Question 1. Write two things which are made from glass.
Answer: Bowls and mirrors are made from glass.

Question 2. Name two materials which appear shiny.
Answer: Aluminium and iron appear to shine

Question 3. Why does iron appear different from copper and aluminium?
Answer: Iron appears different from copper and aluminium because it reacts with air and moisture loses its shape and appears dull, but in the case of copper and aluminium, these maintain their shine.

Question 4. Give the reason why some metals become dull and lose their shine (lustre).
Answer: Some metals lose their shine because when exposed to air react with moisture and gases present in them, thereby forming a dull layer of some other compounds.

Question 5. By which property, do steel and sponge differ from each other?
Answer: Hardness and softness are the properties by which steel and sponge differ from each other.

Question 6. Mixtures of red chilli powder in water, butter in water, petrol in water and honey in water were given to Radha, Sudha, Sofia and Raveena, respectively. Whose mixture is in solution form?
Answer: Raveena has a solution because honey will dissolve in water whereas red chilli powder, butter and petrol float on water.

Question 7. Are vinegar and lemon juice soluble or insoluble in water?
Answer: Vinegar and lemon juice are completely soluble in water.

Question 8. Write two names of liquids which are insoluble in water.
Answer: Mustard oil and kerosene oil are the two liquids which are insoluble in water.

Question 9. Materials which are denser than water sinks in water. Give two examples of such materials.
Answer: Honey and a steel spoon are examples of materials which are denser than water. These will sink.

Question 10. Some materials float on water. Name two such materials.
Answer: Wood and plastic are the materials which float on water.

Question 11. Take a small cotton ball and place it in a tumbler/bowl filled with water. Observe it for at least 10 minutes. Will it float or sink in water and why?
Answer: Cotton ball initially floats on water, but after a few minutes (i.e. 10 min), it sinks because it absorbs water.

Question 12. Do all liquids dissolve in water?
Answer: Some liquids get completely dissolved in water. Some others do not dissolve in water and form a separate layer when kept aside for some time.

Question 13. Do all gases also dissolve in water?
Answer: Some gases dissolve in water whereas others are not. Water usually has small quantities of some gases dissolved in it, e.g. oxygen gas is dissolved in the water.

Question 14. List the following substances as soluble and insoluble in water. Sand, sugar, vinegar, common salt, chilli, ghee.
Answer:

1. Soluble sugar, vinegar, common salt.
2. Insoluble sand, chilli, ghee.

Question 15. Why a shopkeeper prefers to keep biscuits and sweets in a glass or plastic container?
Answer: Due to the transparent nature of glass or plastic containers, biscuits, sweets, etc. can be seen easily by buyers. Hence, shopkeepers store them this way.

Question 16. Write two objects through which things can be seen clearly.
Answer: Polythene and glass containers are transparent objects through which things can be seen clearly.

Question 17. On a bright sunny day, Shikha was playing hide and seek with her brother. She hides behind a glass door. Do you think her brother will be able to locate her? If yes, why? If not, why not? Competency Based Que.
Answer: Yes, her brother can easily locate her because the glass door is a transparent material.

Question 18. Write the name of two objects which are made from opaque materials.
Answer: Blackboard and wooden doors are objects which are made from opaque materials.

Question 19. Why do we need to group materials in everyday life?
Answer: We need to group materials for our convenience. Grouping materials helps us to locate things easily.

Question 20. Do liquids also dissolve in water?
Answer: No, all liquids do not dissolve in water. Liquids like vinegar, and lemon juice, dissolve in water, while most oils do not mix and form a separate layer.

Question 21. What happens when dried leaves, a piece of stone and a drop of honey are dropped in water?
Answer: Dried leaves float on the surface of water, while a piece of stone and honey sink to the bottom.

Question 22. Give five examples of each object that floats on water and those that sink in water.
Answer: Examples of objects that float on water are balloons, sponges, ice, empty bottles, boat, etc. Examples of objects that sink in water are stone, iron blocks, marble, honey, jewellery, etc.

Question 23. Give some examples of translucent materials.
Answer: Some examples of translucent materials include frosted glass, thin plastic sheets, wax paper, some fabrics, etc.

Question 24.  Is the palm of our hand transparent, translucent or opaque?
Answer: The palm ofour hand is translucent. Hence, we can see some light coming through it

NCERT Class 6 Science Chapter 2 Sorting Materials Into Groups Fill In The Blanks

1. Materials through which we are not able to see are called Opaque materials.

2. Animals live underwater. It is because oxygen gas dissolves in it.

3. Rough Materials have uneven surfaces.

4. Rough materials have an uneven or irregular surface.

5. Materials which cannot be compressed are called Hard materials.

6. Soft materials can be cut with a knife.

7. Materials which do not disappear in water are called insoluble materials

8. Those materials through which we cannot see are called translucent materials.

NCERT Class 6 Science Chapter 2 Sorting Materials Into Groups Write True Or False

1. False Hard materials are easily compressible.

2. False Butter paper is a transparent material.

3. False Gold is not a lustrous material.

4. Diamond Is known as the hardest natural material. True

5. Ice Is lighter than water. True

6. Mustard oil Is soluble in water. False, mustard oil is insoluble in water

7. Carbon dioxide gas is soluble in water. False

8. Mirror is opaque. False

NCERT Class 6 Science Chapter 2 Sorting Materials Into Groups  Assertion-Reason Question And Answers

The following questions consist of two statements. Assertion and Reason (R). Answer these questions by selecting the appropriate option given below.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true, but, R is not the correct explanation of A
3. A is true, but, R is false
4. A is false, but, R is true

1. Assertion Chalk powder floats on water.
   Reason (R) Chalk powder is insoluble in water.
2. Assertion Animals can live underwater.
   Reason (R) O2 dissolves in water.
3. Assertion Frying pan is translucent.
   Reason (R) Translucent objects allow some light to pass through them.
4. Assertion Materials are grouped for convenience.
   Reason (R) Materials can be grouped based on their names.

Answers

1. A is false, but R is true. This can be corrected as Chalk powder is insoluble in water. It settles down at the bottom.
2. Both A and R are true and R is the correct explanation of A.
3. A is false, but R is true. This can be corrected as the Frying pan is made up of metal. Hence, it is opaque, opaque materials allow no light to pass through, while translucent materials allow some light.
4. A is true, but R is false. R can be corrected as Materials are grouped based on their properties and not names.

NCERT Class 6 Science Chapter 2 Sorting Materials Into Groups Match The Columns

Question 1. Match the following columns 

Answer: A-2, B-1, C-4, D-3

Question 2. Match Column 1 with Column 2.

Answer: A— 3, B— 5, C— 1, D— 2, E— 4.

Understanding Chapter 6 of NCERT Class 6 Science

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Long Questions And Answers

Question 1. Like many animals, although a car also moves, It Is not considered a living organism. Give two or three reasons.
Answer: A car though moving is not considered a living organism because Living organisms can move on their own, whereas a vehicle moves by the burning of fuel; like diesel and petrol. Like all living organisms, a car does not show any other living characteristics like respiration, digestion, reproduction or growth.

Question 2. Ravi and Ritu went on a vacation to different places. They went to Rishikesh, Himalayas, Kerala, and Rajasthan. They saw many kinds of trees, plants and animals, e.g. pine trees in the Himalayas and cacti In Rajasthan. All the places were so different from each other. They clicked pictures, collected samples and showed Them to their teacher asking them to explain the reason behind these variations.

Read and Learn More Class 6 Science Question And Answers

1. Why is there a difference In the type of plants growing In different places?
2. What do you mean by the survival place of an organism?
3. How many types of such places that give living organisms shelter, food, etc. are you aware of?
4. Give an example of variation in plants from different regions.

Answer:

1. Plants growing in different places appear different due to the presence of unique adaptive features which can be morphological or physiological.
2. It is called a habitat. It provides food, water and shelter, on it. to all living organisms.
3. Two types of habitats have been observed
4. Terrestrial
5. Aquatic.
6. Leaves of cactus present in desert, are either absent or are very small and spiny to reduce water loss through transpiration.
7. While leaves of trees like deodars are needle-shaped to let snow falling on them slide off easily.

Question 3. Riya lives in Delhi. During her vacations, she went to Leh with her parents. They all were fine on the way. When they reached Leh, all of them started feeling nauseous and complained of headaches and breathing difficulties. A man travelling with them told them to rest for a few days and everything would be fine. After a few days, Riya observed that the man was right and they were feeling fine.

1. Why was Riya and her family suffering from these symptoms?
2. After 2-3 days everybody was fine. Why?
3. Explain what happened.

Answer: Riya and her family were suffering from these symptoms because they were present at high altitude regions where oxygen supply is limited.

After a few days, everybody’s body had adjusted to the conditions of the mountain region.

When we go from plains to mountains, our body faces difficulties due to the sudden changes it is exposed to. After a few days, however, they all get acclimatised to these sudden changes.

NCERT Class 6 Science Chapter 6

Question 4. A caterpillar coils when touched

• Which feature of the caterpillar Is shown In the picture?
• It grows
• It reproduces
• It breathes through tiny pores on its bodies
• It responds to changes in the environment
• The green colour of a caterpillar helps It to blend with the green leaves. Explain how this helps the caterpillar.

Answer: It responds to changes in the environment.

The green colour of a caterpillar helps it get camouflaged with green leaves. This blending of colour protects the caterpillar from the predators like insects.

Question 5. Sea lions are mammals that live in the seas.

Some common features of sea lions are

• A streamlined body
• Whiskers on the face
• Short fur on the body
• Limbs shaped like flippers
• A layer of fat under the belly

What does the picture show about sea lions?

• They feed mainly on fish
• They enjoy resting on rocks
• They can see underwater
• They produce babies that look similar to adults
• Which two features of sea lions listed above help them swim in water?

Answer:

• They produce babies that look similar to adults.
• The two features of sea lions that help them to swim in water are as follows
• A streamlined body
• Limbs shaped like flippers

Question 6. The given picture is of a desert ecosystem. The biotic component of this ecosystem is the

1. Date plan
2. Sand Dune
3. Sunlight
4. Water

Adaptations in Organisms

Explain any two adaptations observed in a cactus that help it to survive in a desert.

Answer:

1. Date palm
2. The two adaptations observed in a cactus that help it to survive, in a desert are as follows (a) Roots are very deep for absorbing water from larger areas.
3. Roots are very deep for absorbing water from larger areas.
4. Leaves are either absent or very small and spiny to reduce water loss through transpiration.

Question 7. The picture shows a cactus. It Is found In hot deserts. Explain how the leaves of the cactus help it to survive In its habitat.

Answer: In cactus, leaves are reduced to spines. Which prevents loss of water (through transpiration). This adaptation helps them to survive in hot deserts

NCERT Class 6 Science Chapter 6

Question 8. State and explain any two features observed in a lotus plant that help it to adapt to an aquatic habitat.

Answer: Two features observed in a lotus plant that help it to adapt to an aquatic habitat are

• The stems are long, hollow and light. This feature makes their stem buoyant.
• The stems grow up to the surface of water and the leaves and flowers float on the surface of water. This increases the exposure to light.

Question 9. The picture shows different animals

Which animals In the picture live In the same habitat?

1. Starfish and snail
2. Earthworm and snail
3. Earthworms, ants and snail
4. Snail, starfish and earthworm

What Is common to all the animals in the picture? Circle ‘Yes’ or ‘No’ for the correct response.

Answer:

1. Earthworms, ants and snail
2. No
3. Yes
4. Yes

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Short Questions And Answers

Question 1. What are the surroundings of plants and animals in the sea and desert?
Answer: In the sea, plants and animals are surrounded by saline (salty) water. Most of them use the air dissolved in water. In the desert, there is very little availability of water.

It is very hot during the daytime and very cold at night in the desert. The animals and plants of the desert live on the desert soil and breathe air from the surroundings.

Question 2. Are sunlight and heat biotic or abiotic components?
Answer: Sunlight and heat are abiotic components

Question 3. Which of the following are living? A forest, trees, creepers, small and big animals, birds, snakes, Insects, rocks, soil, water, air, dry leaves, dead animals, mushrooms and moss.
Answer: Living things are as follows A forest, trees, creepers, small and big animals, birds, snakes, insects, mushrooms and moss.

Question 4. How can you distinguish between living and non-living things?
Answer: The differences between living and non-living things are as follows

Question 5. Do non-living things show growth?
Answer: Yes, non-living things show growth. They increase in size and mass, for example; clouds.

Question 6. Can we live without breathing?
Answer: No, we cannot live without breathing. It is a part of a process called respiration. It is through respiration that the body finally obtains energy from the food it takes.

Question 7. How do we respond, if we suddenly step on a sharp object like a thorn, while walking barefoot?
Answer: If we suddenly step on a sharp object like a thorn, while walking barefoot we withdraw our foot.

Question 8. How do we feel when we see or think about our favourite food?
Answer: When we see or think about our favourite food, water starts filling our mouths.

Question 9. What happens when we suddenly move from a dark place to bright sunlight?
Answer: When we suddenly move from a dark place to bright sunlight our eyes shut themselves automatically for a moment till they adjust to the changed bright surroundings.

Question 10. Give some examples of responses of animals to stimuli.
Answer: Some examples of responses of animals to stimuli are as follows

1. Wild animals run away when a bright light is flashed towards them.
2. Cockroaches begin to move to their hiding places if the light in the kitchen is switched on at night.

Question 11. Do plants respond to stimuli? 
Answer: Yes, plants respond to stimuli. For example, in some plants, flowers close after sunset and in some plants like ‘touch-me-not’, leaves close when touched.

Question 12. What is a habitat?
Answer: The place where organisms live is called habitat. It means a dwelling place (a home).

Question 13. How are cactus adapted to survive in a desert?
Answer: To survive in a desert, a cactus has the following adaptations

• Leaves are either modified into spines or are absent to prevent water loss through transpiration.
• Stem is modified to perform photosynthesis and covered with a thick waxy layer to retain water.
• The root system of the cactus is well-developed and grows deep to absorb water.

Question 14. Which of the things in the following list are non-living? Plough, mushroom, sewing machine, radio, boat, water hyacinth, earthworm
Answer: Non-living things do not possess life and do not need food, air or water. Thus, in the given list plough, sewing machines, radios and boats are non-living objects.

NCERT Class 6 Science Chapter 6

Question 15. Give an example of a non-living thing which shows any two characteristics of living things.
Answer: A cloud is an example of a non-living thing which shows the following two characteristics of living things

1. It increases or decreases in size.
2. It shows movements.
3. (Another example can be a car which moves from one place to another and also requires energy, i.e. petrol).

Question 16. Which of the non-living things listed below, were once part of a living thing? Butter, leather, soil, wool, electric bulb, cooking oil, salt, apple, rubber
Answer: The following are the non-living things from the list which were once part of living things

• Butter Obtained- from milk from dairy animals
• leather- From animal skin
• Wool- From the hair of sheep or goat
• Cooking oil- Seeds Of plants
• Apple- Fruit From Apple Tree
• Rubber- Latex Of Rubber Tree.

Question 17. List the common characteristics of the living things.
Answer: Living things have the following common characteristics-

1. Growth
2. Movement
3. Reproduction
4. Respirator
5. Respond to stimuli
6. Excretion

Question 18. Explain why speed is important for survival in the grasslands for animals that live there. Hint There are few trees or places for animals to hide in grassland habitats.
Answer: In grasslands, there are a limited number of trees and places for animals to hide. When the enemy attacks an animal, it has to run fast, to reach a safe place. If it fails, it has to lose its life. So, speed in such places as grasslands is very important for the survival of animals.

Question 19. A habitat Is said to have two supporting components. What are they?
Answer: A habitat includes

• A living component is called an abiotic.
• Non-living components are called abiotic.

Question 20. Why do desert snakes burrow deep into the sand
Answer: Snakes in the desert burrow deep into the sand during the daytime because the deeper layers of sand are cooler which allows them to stay away from the heat of the desert that persists through the daytime.

Question 21. Some desert plants have very small leaves, whereas some others have only spines. How does this benefit you during the day? the plants?
Answer: Desert plants have very small leaves or spines as adaptations to dry conditions. Because of these modifications, the surface of the lamina is reduced thereby reducing water loss by transpiration as water is scarce in desert habitats.

Question 22. The presence of needle-like leaves on trees growing in extreme cold helps them to survive the cold conditions. Explain.
Answer: Many mountain trees have small, needle-like leaves due to which these leaves lose very little water in windy conditions. This helps the mountain trees to survive in winter when all the soil water is frozen in the form of ice and not available to their roots.

The needle-like leaves have a thick waxy layer (or cuticle) to reduce the loss of water through transpiration and to protect them from damage by rain and snow.

Question 23. An animal has a round body, small ears and thick fur on its body, feet and toes. This animal has a thick layer of fat beneath its skin to provide insulation.

• The feet of this animal Are also bigger.
• Identify this animal.
• Name the possible habitat of this animal.

Answer: This animal is a snow leopard.

The habitat of this animal is the mountain where snow is present.

Question 24. Explain why many mountain trees are cone-shaped having sloping branches.
Answer: The trees in mountain habitats are usually cone-shaped having sloping branches because this shape of the mountain trees makes the rainwater and snow slide off easily without damaging the branches and leaves.

Question 25. What are the specific features present In a deer that help It to detect the presence of predators like lions?
Answer: A deer has the following specific features that help it to detect the presence of predators like lions.

• Long ears to hear the movement of predators.
• Eyes on the sides of its head which allows it to look in all directions.

Adaptations in Organisms

Question 26. Aquatic plants undergo some modifications to adapt to their habitat. List any two of those.
Answer: Two adaptations of aquatic plants are

• The roots of these plants are small just to keep the plant in place.
• Stems are hollow with large spaces which help in floating.

Question 27. Write the adaptation in aquatic plants due to which

• Submerged leaves can bend in the flowing water
• Leaves can float on the surface of water

Answer: The Adaptations in Organisms

• Leaves ofsubmerged aquatic plants are narrow and ribbon-like which allows them to bend in the flowing water.
• Stems/Stalks of leaves of aquatic plants are long, hollow and light which allows them to float on the surface of water.

Question 28. Read the features of different plants given below

• Thick waxy stem
• Short roots
• Cone-shaped plants
• Sloping branches
• Small or Spine like leaves
• Hollow stem

Choose the type of plant for every adaptive feature given in a, b, c, d, e and f from the list given below Aquatic plant, desert plant, mountainous plant.

Answer: Given below are the features of their corresponding type of plant,

• Thick waxy stem – desert plant
• Short roots – aquatic plant
• Cone-shaped plants-mountainous plants
• Sloping branches – mountainous plant
• Small or Spine leaves- desert plant
• Hollow stem – aquatic plant

Question 29. Montlonono adaptation present In the following

• In camels to keep their bodies away from the heat of sand.
• In frogs to enable them to swim.
• Dolphins and whales breathe In air when they swim near the surface of the water.

Answer: Camels have long legs to keep their bodies away from the heat of sand.

• Frogs have webbed feet that enable them to swim,
• Dolphins and whales have blow holes which help them to breathe in air when they swim near the surface of water.

Question 30. List the types of movements seen In plants.
Answer: We sec the following movements in plants

1. Opening and dosing off lower.
2. Growth of stem and leaves.
3. Growth of stems and twigs towards light and roots towards soil and water.

Question 31. Pahell has a rose plant In her garden. How can she Increase the number of rose plants In the garden?
Answer: Paheli can increase the number of rose plants in the garden by planting stem cuttings of the rose plant. This will lead to the reproduction of the rose plant.

Question 32. Plants are also called living beings. Mention any two characteristics that support this classification.
Answer: Plants are called living beings because

• They carry out the respiratory process.
• They respond to stimuli.
• A car though moves is not considered a living organism because of the following reasons
• Living organisms can move on their own, whereas a car moves by the burning of fuel; like diesel and petrol.
• Like all living organisms, a car does not show any other living characteristics like respiration, digestion, reproduction or growth.

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Very Short Questions And Answers

Question 1. Camels live in desert habitats. How do they adapt to such a harsh climate?
Answer: Camels have long legs, a hump and padded feet. All of these are adaptive features that help camel to survive in desert habitats.

Question 2. Name the place where an organism lives and gets its food.
Answer: Habitat is a place where an animal lives and gets its food.

Question 3. Using the following words, write the habitat of each animal given in figures (a to d). Grassland, mountain, desert, pond, river

Answer:

• The diagram is of a deer which lives in grassland
• The diagram is of a frog which lives in the pond
• The diagram is of a yak which lives in the mountain
• The diagram is of a camel which lives in the desert

Question 4. Classify the following habitats into terrestrial and aquatic types. Grassland, pond, ocean, rice

Answer: The habitats can be classified as

• Terrestrial habitats
• — Grassland and rice field
• Aquatic habitats — Pond and ocean

Question 5. Adaptation to habitat does not take place in a short time. Explain.
Answer: It takes thousands of years for the abiotic factors to change and support the animals and plants present there,

Question 6. Animals like mountain goats and snow leopards do not slip or fall. Why?
Answer: These animals have big and padded feet and strong hooves to spread their weight which prevents them from slipping and falling on the mountains.

Question 7. Mention two ways by which animals cope with low temperatures.
Answer: Animals living in colder areas have hairy skin and a thick layer of fat under their skin to warm their bodies.

Question 8. Name the adaptation of hiding by merging with the surroundings.
Answer: Camouflage.

Question 9. Leaves of mountain trees prevent damage by snow or rain. How?
Answer: The needle-like leaves of these trees have a thick waxy layer called cuticle which protects the leaves from any kind of damage.

Question 10. Lions have very high agility. Why do they need this type of adaptation?
Answer: As a predator, they have to hunt for food which is not easy as prey like deer are very fast. Thus, they have high agility.

Question 11. A few animals can live in both places, i.e. land and water. Name at least two.
Answer: Few animals have adaptations to live both in water as well as land. These are called amphibians, e.g. frogs and toads.

Question 12. An adaptation requires a change In the body shape of the animals present. Name the habitat and the modification present.
Answer: Animals in aquatic habitats have streamlined bodies which help them survive underwater.

Question 13. Growth is an important characteristic of living beings. Support this statement.
Answer: Growth represents an increase in the weight and size of living beings as time passes. Non-living things do not grow over time.

Question 14. During respiration, gases are exchanged in our lungs. What are these gases? Answer: Carbon dioxide is given off and oxygen is taken in by our lungs.

Question 15. Why is reproduction important for organisms?
Answer: Reproduction is important for organisms as it leads to the production of more individuals of their kind. This helps in the continuity oflife on the Earth.

Question 16. Unscrnmblo tho words given below to got tho correct words using tho clues given against them.

1. SATPADAOINT specific features or certain habits which enable a living being to live In Its surroundings.
2. RUTRCQXNI waste products are removed by this process.
3. LUMISIT all living things respond to these.
4. ROUCDPRENTOI Because of this we find organisms of the same kind.

Answer:

1. Adaptations
2. Excretion
3. Stimuli
4. Reproduction.

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Fill In the blanks.

1. The presence of specific features which enable a plant or an animal to live in a particular habitat is called adaptation

2. The habitats of the plants and animals that live on land are called terrestrial

3. The habitats of plants and animals that live in water are called aquatic

4. Soil, water and air are the habitat abiotic

5. Changes in our surroundings that make us respond to them are called stimuli

6. Plants and animals living on land, are called terrestrial organisms.

7. Soil, water and air are the abiotic components of a habitat.

8. Desert plants have long roots for better absorption of minerals and water.

9. Some objects are characterised as living while others as non-living

10. The animals depend on it for their food plants.

11. Webbed feet is a feature found in frog

12. A habitat has biotic and Abiotic components that interact with each other.

13. Fishes have gills for respiration.

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats True Or False

1. Fin is for aquatic life in fishes. True

2. Mountain is a special terrestrial habitat with low temperature. True

3. Almost all types of plants are found in the sea. False, Only Those Plants that are adapted to aquatic Habitats are found in the sea.

4. Frog has dry skin. False, the frog has wet and slimy skin

5. All living beings need water. True

6. The non-living objects carry out respiration. False, non-living things cannot carry out respiration. It is a feature of living things.

7. Leaves of touch-me-not plant curl up when touched. True

8. In cacti, leaves are reduced to spines. True

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Assertion-Reason Questions

The following questions consist of two statements. Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true, but R is not the correct explanation of A
3. A is true, but R is false
4. A is false, but R is true

1. Assertion (A) Forests, grasslands, deserts and mountain regions are examples of terrestrial habitats.
Reason (R) The plants and animals that live on land are said to live in terrestrial habitats.

2. Assertion (A) The eyes of a lion are in front of the face.
Reason (R) They help to get the correct idea about the location of its prey.

3. Assertion (A) Non-living things react to changes in their surroundings.
Reason (R) Changes in surroundings that make us respond to them are called stimuli.

Answer:

1. Both A and R are true, but R is not the correct explanation of A.
2. Both A and R are true and R is the correct explanation of A.
3. A is false, but R is true. A can be corrected as Living things react to changes in their surroundings, i.e. they respond to stimulus.

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Match The Columns

Question 1. Match the Column 1 with Column 2.

Answer: A-2, B-4, C-5, D-3, E-1

Question 2. Match the Column 1 with Column 2.

Answer: A-1,B-5, C-2, D-3.E-4

Question 3. Match the Column 1 with Column 2.

Answer: A-4, B-5.C-2, D-1, E-3

NCERT Class 6 Science Chapter 1 Components Of Food Long Question And Answers

Question 1. Paheli and Boojho peeled some potatoes and cut them into small pieces. They washed and boiled them in water. They threw away the excess water and fried them in oil adding salt and spices. Although the potato dish tasted very good, its nutrient value was less. Suggest a method of cooking potatoes that will not lower the nutrients in them.
Answer: Methods of cooking potatoes that will not lower their nutrient content are as follows

1. Potatoes should be first washed and then peeled and cut as washing the potato after peeling, removes some vitamins and minerals.
2. The excess water in which the potatoes were boiled should not be thrown away as it leads to the loss of some of the proteins and minerals. This should be avoided.
3. A small amount of water and less quantity of oil should be used for cooking as it conserves nutrients.

Question 2. Write a short note on the importance of a balanced diet for the human body.
Answer: A balanced diet is essential for maintaining good health and well-being. It involves consuming a variety of food items that provide the necessary nutrients to support body functions.

It mainly includes a mixture of carbohydrates, proteins, fats, vitamins and minerals. This combination helps to fuel the body, support growth and repair tissues.

Read and Learn More Class 6 Science Question And Answers

Question 3. Distinguish between the following

1. Malnutrition and undernutrition
2. Minerals (functions, sources) and carbohydrate (functions, sources)

Answer: Differences between malnutrition and undernutrition are as follows

Differences between minerals and carbohydrates are as follows

Question 6. Boojho was having difficulty seeing things in dim light. The doctor tested his eyesight and prescribed a particular vitamin supplement. He also advised him to include a few food items in his diet,

1. Which deficiency disease is he suffering from?
2. Which food component may be lacking in his diet?
3. Suggest some food items that he should include in his diet, (any four)

Answer:

1. Boojho is suffering from night blindness.
2. The food component which may be lacking in his diet is vitamin A.
3. The food items that he should include in his diet to overcome the deficiency of vitamins are carrots, papaya, milk, mango and fish oil.

Question 7.

1. A lot of awareness is being spread about the use of iodised salt in food. Why so?
2. What happens if iodine is not incorporated into our diet?
3. Iodine deficiency is most common in which place?
4. Deficiency of iodine leads to which disease?

Answer:

1. The use of iodised salt is very important as iodine is an important mineral nutrient needed in the body for supporting functions of the thyroid gland and other growth-related functions.
2. If iodine is not incorporated into our diet, it will lead to its deficiency. Thyroid functioning will be impaired along with growth and development. It causes swelling of the thyroid gland that is present in the neck.
3. In hilly areas, the food and drinking water are lacking in iodine. Thus, this deficiency is most commonly observed in these areas.
4. Deficiency of iodine causes goitre.

Question 8. How will you detect the presence of protein in soybeans?
Answer: The presence of protein in soybeans can be detected by the following procedure.

1. Prepare copper sulphate solution by dissolving 2 g of copper sulphate in 100 mL of water.
2. Dissolve 10 g of caustic soda in 100 mL of water.
3. Now grind the soybeans into a thin paste, with the help of a mortar and pestle. Transfer the paste to a clean test tube.
4. Add 10 drops of water into this test tube and shake it well.
5. Now, using a dropper add 2 drops of freshly prepared copper sulphate solution.
6. Then add 10 drops of caustic soda solution to the test tube and shake it well. The solution turns violet showing the presence of protein (soybean).

Question 9. Observe the given figure and answer the following questions.

Answer:

1. The food items shown are mainly rich in ‘X’, a nutrient component of food. What is X?
Answer: ‘X’ is a protein

2. Name the disease caused by deficiency of component X.
Answer: Kwashiorkor

3. What is the main function of ‘X’?
Answer: Proteins are required for the growth and repair of tissues in our body.

4. What chemicals are used to test the presence of the X in the food items?
Answer: Copper sulphate and caustic soda

Question 10. Fat-rich foods leave an oily patch on paper when smashed or rubbed on it. Raju wanted to check this through an activity. Fie performed the following steps.

• Step 1 Placed a fat-rich food item on a piece of white paper.
• Step 2 Smashed the food gently with a hammer.
• Step 3 Remove the smashed food from the paper.
• Step 4 Dried the paper and then checked for any patches on it.

1. In step 4, Raju dried the paper before checking for patches. What could be the most likely reason for this?
   Raju performed the same activity with four types of food. Which of the following will decide the amount of fat in each food item?

Answer:

1. The shape of the paper
Answer: Foods may also contain water that can leave a wet patch on the paper. For example, some food items contain moisture. Moisture can make a wet patch on a piece of paper.

2. Time taken for the paper to dry
Answer: Proteins are required for the growth and repair of tissues in our body.

3. The size of the oily patch on the paper
Answer: Fats

4. Ease of smashing the food with a hammer
Answer: A balanced diet

Question 11. Observe the given picture and table to answer the image of the following question–

Answer:

1. Which component of food does Arjun have in excess in his diet?
Answer: Fats

2. What kind of diet does Yash have?
Answer: A balanced diet

3. Write two features which may harm Arjun’s health
Answer: The features that may harm Arjun’s health are as follows

1. Taking lots of fats in his diet.
2. Lack of exercise in his lifestyle.
3. Skill-Based Questions As Per

Question 12. Check the presence of starch, protein and fat in the given food items and complete the table given below

Answer: The presence of starch, protein and fat in the given food items is shown in the following table-

Question 13. What do various nutrients do for our body?
Answer: Our body requires various types of food for a variety of purposes. For example, proteins help in body-building, carbohydrates and fats provide energy, and vitamins and minerals protect against diseases.

Question 14.

1. Are fats, proteins and starch present in all food items?
2. Does a food item contain more than one nutrient?
3. Is there any food item that does not contain any of the three nutrients?

Answer: No, not all the food items contain fats, proteins and starch. Certain food items contain fat whereas others contain protein or starch or variable amounts of these nutrients.

Yes, most food items like nuts, milk, vegetables, cooked pulses, etc. usually contain more than one nutrient.

Yes, good products like a slice of fruit or vegetable do not contain any of these three (fats, proteins and starch) nutrients.

Question 15. Are there any fresh vegetables or fruits that do not contain some amount of water?
Answer: No, fresh vegetables or Iruits contain some amount of water. To some extent, our body’s needs for water are met by this water.

Question 16. Does the need for a balanced diet depend on the amount of physical work that we do?
Answer: Yes, the need for a balanced diet depends on the level of physical work, age and sex. For example, a labourer needs more energy than compared man.

Question 17. Does animal food also consist of different components and do they also need a balanced diet?
Answer: Yes, animal food also consists of various components such as protein, fat, vitamins and minerals. Just like humans, animals also require a balanced diet for their maintenance and growth.

Question 18. Do you think that fat-rich foods are harmful to us if eaten too much?
Answer: Yes, I think that fat-rich foods are harmful to us if eaten too much as they may cause obesity and increase the risk of many health problems.

Question 19. Name the major nutrients in our food.
Answer: The major nutrients in our food are

1. Carbohydrates
2. Proteins
3. Fats
4. Vitamins
5. Minerals
6. Water and roughage

Question 20. Name the following.

1. The nutrients which mainly give energy to our body.
2. The nutrients that are needed for the growth and maintenance of our body.
3. A vitamin is required for maintaining good eyesight.
4. A mineral that is required for keeping our bones healthy.

Answer:

1. Carbohydrates and fats mainly give energy to our body.
2. Proteins and minerals are needed for the growth and maintenance of our body.
3. Vitamin A is required for maintaining good eyesight.
4. Calcium is a mineral that is required for keeping our bones healthy.

Question 21. Name two foods each rich in

1. Fats
2. Starch
3. Dietary fibre
4. Protein

Answer:

1. Oil and ghee are food items rich in fats.
2. Rice and potatoes are food items rich in starch.
3. Whole grains and fresh fruits are the food items rich in dietary fibre.
4. Pulses and milk are food items rich in protein.

Question 22. Write True Or Flase the correct statements.

1. By eating rice alone, we can fulfil the nutritional requirements of our bodies.
2. Deficiency diseases can be prevented by eating a balanced diet.
3. A balanced diet for the body should contain a variety of food items.
4. Meat alone is sufficient to provide all the nutrients of the body.

Answer:

1. By eating rice alone, we can fulfil the nutritional requirements of our bodies.- False
   • The statement is false because we can fulfil the nutritional requirements of our body by eating a balanced diet.
2. Deficiency diseases can be prevented by eating a balanced diet.- True
   • The statement is true because a balanced diet contains all the nutrients in adequate amounts needed by the body.
3. A balanced diet for the body should contain a variety of food items.- True
   • The statement is true because all the nutrients cannot be present in one type of food.
4. Meat alone is sufficient to provide all the nutrients of the body.- False
   • The statement is false because meat provides only proteins to our bodies.

NCERT Class 6 Science Chapter 1 Components Of Food Short Question And Answers

Question 1. Rohit was very tired when he came back home after school. His mother gave him a glass of water with glucose dissolved in it. Rohit felt refreshed. Does drinking only glucose water suffice for all the nutritional demands?
Answer: Glucose is the simplest form of carbohydrate and it is a source of instant energy. But drinking only glucose water will not provide a balanced diet because it only provides energy. We also need to intake body-building and protective foods, along with roughage.

Question 2. Write any two points indicating the importance of protein in our diet.
Answer: Proteins are needed in our diet because

• They are essential for the growth and repair of body tissues.
• They also play an important role in building and maintaining muscles.

Question 3. Read the items of food listed below. Classify them into carbohydrate-rich, protein-rich and fat-rich foods and fill them in the given table. Moong dal, fish, mustard oil, sweet potato, milk, rice, egg, beans, butter, buttermilk (chhachh), cottage cheese (paneer), peas, maize, and white bread.

Answer: The complete filled table is

Question 4. Minerals and vitamins are needed in very small quantities by our body as compared to other components, yet these are important parts of a balanced diet. Explain the statement.
Answer: Though minerals and vitamins are needed in very small quantities by our body, these are important parts of a balanced diet because

Vitamins are necessary for good eyesight (vitamin A), growth (vitamin-B,), keeping teeth, gums and joints healthy (vitamin C) and normal growth of bones (vitamin D).

Minerals are needed in our body for building bones and teeth (calcium and phosphorus), formation of blood (iron), strengthening of bones (calcium) and functioning of thyroid gland (iodine).

Question 5. Water does not provide nutrients, yet it is an important component of food. Explain.
Answer: Water does not provide nutrients, yet it is an important component of food because it helps

1. To transport digested food to body cells.
2. To absorb nutrients from the food.
3. To get rid of waste products from the body.
4. To control and regulate the body temperature.

Question 6. Paheli avoids eating vegetables but likes to eat biscuits, noodles and white bread. She frequently complains of stomachache and constipation. What are the food items that she should include in her diet to get rid of the problem? Give a reason for your answer.
Answer: Paheli should include roughage in her diet. It is the fibrous matter in food that cannot be digested in our bodies. It has no nutritive value, but its presence is essential for the normal functioning of the digestive system. It helps our body to get rid of undigested food.

Thus, Paheli must include whole grains, pulses, fresh fruits and vegetables in her diet as fibre (roughage) is found in these food items.

Question 7. A family eats boiled eggs, bread toast and orange juice for breakfast. Is it a nutritious and healthy breakfast? Which nutrients are they taking in?
Answer: Yes, the family is eating a healthy breakfast because it includes all the nutrients. The nutrients they are consuming are

1. Eggs rich in protein and fat,
2. Bread rich in starch and roughage,
3. Orange juice is rich in vitamins and roughage.

Question 8. Is a balanced diet an expensive diet? Give reasons to support your answer.
Answer: No, a balanced diet is not an expensive diet. It includes food items like pulses, groundnuts, soybean, sprouted seeds (moong), spinach, banana, sattu, jaggery, a combination of flours (missi roti, thepla made from cereals and pulses), vegetables and other such foods that provide nutrients.

Question 9. Tasty food is not always nutritious and nutritious food may not always be tasty to eat. Comment with examples.
Answer: Tasty food is not always nutritious and nutritious food may not always be tasty to eat.

Certain examples in favour of the above statements are

1. Potato chips are tasty to eat but are not nutritious as they contain a huge amount of fat.
2. Green leafy vegetables either boiled or steamed are very nutritious but not good in taste.
3. Certain fast foods like pizza, burgers, etc., are very good to taste but are not nutritious as they contain a huge amount of fat.

Question 10. Doctors advise not to boil fruits before eating. What could be the likely reason for this? Circle ‘Yes’ or ‘No’ for each statement.
Answer:

Question 11. Write any two symptoms that will appear in the individual if the diet is deficient in both carbohydrates and proteins for a long period.
Answer: The following symptoms will appear if the diet is deficient in both carbohydrates and proteins for a long period

• The growth of an individual may stop completely.
• Such an individual becomes very lean, thin and weak.
• He or she may not even be able to move.

Question 12. A mineral causes anaemia when it is not present in sufficient concentration. Name this mineral. What are the symptoms associated with this disease? Also, list a few sources of this mineral.
Answer: Anaemia occurs in the absence of iron. This mineral is essential for making haemoglobin in red blood cells. Its deficiency results in blood deficiency in haemoglobin. Thus, the blood of a person cannot carry sufficient oxygen to all parts of the body.

Symptoms of this disease are

1. Pale appearance, nails turn white.
2. Extreme weakness.
3. Insignificant weight loss

Question 13. How can an individual prevent rickets and night blindness by controlling his diet? Name some food items that he should add to his die
Answer: An individual should eat more foods containing vitamin D and vitamin A to prevent rickets and night blindness, respectively. The rich sources of vitamin D include butter, milk, egg and fish. Food items such as mango, carrot, papaya and milk are rich in vitamin A.

Question 14. While using iodine in the laboratory, some drops of iodine fell on Paheli’s socks and some fell on her teacher’s saree. The drops of iodine on the saree turned blue-black while their colour did not change on the socks. What can be the possible reason?
Answer: The drops of iodine are used to detect the presence of starch in the food item. The possible reason for the appearance of a blue-black colour on the teacher’s saree is due to the presence of starch. The saree would have been starched. Paheli’s socks did not have starch on them, therefore, their colour did not change.

Question 15. Can you test and identify which of the following food items are fatty foods, i.e. food which is rich in fats? How will you test them? Pulses, oil, wheat grains, butter, meat, rice, chapati, cucumber, pizza, poori and groundnuts.
Answer: Fats can be tested by a simple test

• Take small amounts of all food materials one by one.
• Place them on a clean white paper and rub with a little force.
• Hold the paper towards the light.
• If a greasy, translucent spot appears, it indicates that the food item is rich in fats. Out of all food items, the following are fat-rich foods: Oil, butter, meat, pizza, poori, and groundnuts.

NCERT Class 6 Science Chapter 1 Components Of Food Very Short Questions And Answers

Question 1. Which type of vitamin is found plenty in lemon?
Answer: 2. Vitamin C

Question 2. Name two substances which provide carbohydrates.
Answer: Potato Wheat

Question 3. Sarthak advises his mother not to sieve wheat flour before making dough. Can you state why?
Answer: This is because the husk in wheat flour is rich in carbohydrates and roughage.

Question 4. Give the name of two components of food which provide energy.
Answer: Carbohydrates and fats are two components of food which provide energy.

Question 5. Proteins are called as building blocks of our body. Why?
Answer: Proteins are called building blocks as they help in the building of muscles of the body.

Question 6. Fat-rich foods are harmful to us if we eat them too much. What do you think?
Answer: Yes, it can be very harmful to eat too much fat-rich foods. Excess of unused fats gets deposited in our bodies and leads to obesity.

Question 7. Which vitamin represents a group of vitamins?
Answer: Vitamin-B complex.

Question 8. There are various types of vitamins. Name them.
Answer: Vitamin-A, C, D, E, K and B-complex.

Question 9. Out of the following food items, which one does not provide any nutrients?
Milk, Water, Orange juice, Tomato soup
Answer: Among the given food items, water does not provide any nutrients. The milk provides proteins, fats and vitamin D while orange juice and tomato soup provide vitamin C.

Question 10. Name a vitamin which is prepared in our body in the sunlight.
Answer: Vitamin D is synthesised when our skin is exposed to sunlight.

Question 11. What is the reason for incorporating salad into our diet?
Answer: Raw vegetables are a good source of various vitamins and minerals.

Question 12. Identify two major sources of carbohydrates from the table below.

Answer: Carbohydrates are the main source of energy. Some sources of carbohydrates are sweets, roti/bread, etc.

Question 13. Unscramble the following words related to components of food and write them in the space provided.

1. Relnpot…………………..
2. Menliars…………………..
3. Tivanmi…………………..
4. Bocatradhyer…………………..
5. Nitesturn…………………..
6. Tfa…………………..

Answer:

1. Protein
2. Minerals
3. Vitamin
4. Carbohydrate
5. Nutrients
6. Fat

Question 14. What happens to our bodies when we do not drink enough water for two or more days?
Answer: Severe dehydration develops in the absence of water which can even lead to death.

Question 15. Is there a way to find the presence of water in food?
Answer: Yes, vegetables and fruits like spinach leaves, tomatoes, melon and oranges when cut release a small amount of water. This indicates that these food materials contain water.
Answer:

Question 16. List the main function of roughage in our diet.
Answer: The main function of roughage is to help our body to get rid of undigested food.

Question 17. Are there any ingredients in food which do not provide any nutrients?
Answer: Water and roughage are two ingredients in food which do not provide any nutrients.

Question 18. Will the diet of a person working in an office on the computer be different from that of a construction labour?
Answer: Yes, the labour need more energy-giving foods like carbohydrates and fats as compared to a person who indulges in less physical activity.

Question 19. Fill in the missing terms in the following chart.
Answer:

Answer:

Question 20. Is there a situation called overnutrition?
Answer: Yes, excessive intake of food or overnutrition can lead to a condition called obesity.

Question 21. Food provides some components to our body which are essential for healthy survival. What will happen in their absence?
Answer: In the absence of nutrients our body will become very weak and various deficiencies/diseases can occur.

Question 22. Name the problems which occur due to a lack of proteins in our diet.
Answer: Swelling of face, discolouration of hair, skin diseases and diarrhoea.

Question 23. Blood clotting is a function of which nutrients?
Answer: Vitamin K helps in the clotting of blood.

Question 24. Write the main cause of the disease called ‘goitre’.
Answer: Goitre is a disease caused due to a deficiency of iodine.

Question 25. If an appropriate amount of vitamin D is not formed in the body or taken from food sources, what will happen?
Answer: Rickets, a condition that causes bones to become soft and bent (deformed bones), results from the deficiency of vitamin D.

Question 26. Iodine solution is used to detect the presence of which food component?
Answer: The iodine solution is used to detect the presence of carbohydrates.

NCERT Class 6 Science Chapter 1 Components Of Food Fill In The Blanks

Question 1. Coconut oil is a rich source of…………..
Answer: Fats

Question 2. Lack of nutrients leads to…………… disease.
Answer: Deficiency

Question 3. In an experiment conducted, the presence of translucent and greasy spots shows the presence of………….
Answer: Fats

Question 4. …………. is caused by a deficiency of vitamin D.
Answer: Rickets

Question 5. A deficiency of …………. causes a disease known as beriberi.
Answer: Vitamin B

Question 6. Deficiency of vitamin C causes a disease known as ………….
Answer: Scurvy

Question 7. Night blindness is caused by to deficiency of …………. in our food.
Answer: Vitamin A

Question 8. Both eggs and ………. are rich in ……….
Answer: Peas, proteins

Question 10. ………. is a rich source of fat.
Answer: Butter

Question 11. (fruit) is a rich source of vitamin A.
Answer: Papaya

Question 12. Milk provides vitamin D and ……….(mineral)
Answer: Protein, calcium

Question 13. Spinach is a good source of the mineral……….
Answer: Iron

NCERT Class 6 Science Chapter 1 Components Of Food True Or False

Question 1. Water is a rich source of nutrition.
Answer: False

Question 2. The violet colour shows the presence of starch when tested with an iodine solution.
Answer: False

Question 3. The components of food are called nutrients.
Answer: True

Question 4. Carbohydrates are called body-building food.
Answer: False, carbohydrates are energy-giving foods. They give us energy to carry out all functions of the body.

Question 5. Proteins are called energy-giving food.
Answer: False, proteins are called body-building foods as they help in the growth and maintenance ofthe body.

Question 6. The richest source of energy is fats.
Answer: True

Question 7. Amla is the richest source of vitamin C
Answer: False.

NCERT Class 6 Science Chapter 1 Components Of Food Assertion-Reason Questions

The following questions consist of two statements assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true, but R is not the correct explanation of A
3. A is true, but R is false
4. A is false, but R is true

1. Assertion (A) Food containing fats and carbohydrates is called protective food.
2. Reason (R) Fats provide twice as much energy provided by the same amount of carbohydrates.
3. Assertion (A) Roughage is necessary for our body. Reason (R) It does not provide any nutrition.
4. Assertion (A) In anaemia, there is extreme fatigue and weakness. Reason (R) It is due to the deficiency of iron.

Answers

1. A is false, but R is true. A can be corrected as Food containing fats and carbohydrates is called energy-giving food. The food items rich in vitamins and minerals are called protective foods.
2. Both A and R are true, but R is not the correct explanation of A. It can be corrected as Roughage is necessary for our body because it forms the bulk and helps in the removal of undigested food. It does not provide any nutrition to our body.
3. Both A and R are true and R is the correct explanation of A.

Question 2. The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true, but R is not the correct explanation of A
3. A is true, but R is false
   A is false, but R is true

Answer:

Question 1. Assertion (A) In scurvy, there are bleeding gums and wounds take a longer time to heal. Reason (R) It is due to the deficiency of vitamin D.
Answer: 3. A is true, but R is false

Question 2. Assertion (A) Repeated washing of rice and pulses removes some nutrition present in them. Reason (R) Useful proteins and a considerable amount of minerals are lost.
Answer: 2. Both A and R are true, but R is not the correct explanation of A.

NCERT Class 6 Science Chapter 1 Components Of Food Match The Columns

Question 1. Match the Column 1 with Column 2.

Answer: A-4, B-3, C-2, D-1, E-5

Question 2. Match the Column 1 with Column 2

Answer: A-2, B-3, C-4, D-6, E-1, F-5