NCERT Solutions for Class 7 Science Chapter 2 Nutrition in Animals

Column- I	Column- II
Food components	Product(s) of digestion
Carbohydrates	Fatty acids and glycerol
Proteins	Sugar
Fats	Amino acids

Ans.

5. What are villi ?Write their location and function.

Ans.

1. Tiny finger-like projections originating from the walls of the small intestine are called villi.
2. Villi are located on the inner walls of small intestine.
3. They increase the surface area for absorption of the digested food.
4. The blood vessels present inside the villi absorbs the nutrients from the digested

6. Where is the bileproduced ?Which component of the food does it help to digest ?

Ans.

1. Bile is produced in the liver.
2. It plays an important role in the digestion of fats.

7. Name the type of carbohydrate that can be digested by ruminants but not by humans. Give the reason also.

Ans.

1. Cellulose is a type of carbohydrate that can be digested by ruminants and not by humans.
2. Ruminants have a large sac-like structure called caecum in their digestive system where the food containing cellulose is digested by the action of certain bacteria.
3. Humans cannot digest cellulose, as the cellulose digesting enzymes are absent in them.

8. Why do we get instant energy from glucose ?

A. Glucose is a simple sugar and can be easily absorbed into the blood to produce energy.

Hence, glucose acts as an instant source of energy.

9. Which part of the digestive canal is involvedin :

1. absorption of food
2. chewing of food
3. killing of bacteria
4. complete digestion of food
5. formation of faeces

Ans.

1. small intestine
2. buccal cavity
3. stomach
4. small intestine
5. large intestine

10. Write one similarity and one difference between the nutrition in Amoeba and human beings.

Ans.

The mode of nutrition in both Amoeba and human beings is Heterotrophic mode of nutrition.

Differences between nutrition in Amoeba and human beings:

1. Digestion of carbohydrates, proteins, and fats starts in separate regions in human
2. In Amoeba all the food components are digested in the food vacuole.

11. Match the items of Column I with suitable items in Column II

Column I Column II

1) Salivary gland ( ) A) Bile juice secretion

2) Stomach ( ) B) Storage of undigested food

3) Liver ( ) C) Saliva secretion

4) Rectum ( ) D) Acid release

5) Small intestine ( ) E) Digestion is completed

6) Large intestine ( ) F) Absorption of water

G) Release of faeces

Ans.

1) C 2) D 3) A 4) B 5) E 6) F

12. Label the following figure of the digestive system.

Ans.

13. Can we survive only on raw, leafy vegetables /grass ?Discuss.

Ans.

1. No, humans cannot survive only on raw, leafy vegetables or grass.
2. It is because these are rich in cellulose, which cannot be digested due to the absence of cellulose digesting enzymes in our digestive system.

NCERT Solutions for Class 7 Science Other Chapters

• Chapter 2 Nutrition in Animals
• Chapter 3 Fibre to Fabric
• Chapter 4 Heat
• Chapter 5 Acids, Bases, and Salts
• Chapter 6 Physical and Chemical Changes
• Chapter 7 Weather, Climate, and Adaptations of Animals to Climate
• Chapter 8 Winds, Storms, and Cyclones
• Chapter 9 Soil
• Chapter 10 Respiration in Organisms
• Chapter 11 Transportation in Animals and Plants
  
• Chapter 12 Reproduction in Plants
• Chapter 13 Motion and Time
• Chapter 14 Electric Current and Its Effects
• Chapter 15 Light
• Chapter 16 Water: A Precious Resource
• Chapter 17 Forests: Our Lifeline
• Chapter 18 Wastewater Story

Important Topics covered in Class 7 Science Chapter 2 Nutrition in Animals

1. Different ways of taking food
2. Digestion in humans
3. Digestion in grass-eating animals
4. Feeding and digestion in amoeba

Class 7 Science NCERT Solutions Chapter 2 Nutrition in Animals

These NCERT Solutions are designed in such a way that students learn and practice questions related to animal nutrition. After that, this chapter cover important topics like nutrition and digestion in humans and animals as well as in simple organisms, the process of nutrition, digestive system, etc. The NCERT Solutions of this chapter also includes different examples and solved exercises that students must go through and use to prepare for exams.

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FAQs on NCERT Solutions for Class 7 Science Chapter 2 Nutrition in Animals

What is animal nutrition for class 7th?

Animal nutrition for Class 7th covers how different animals obtain and process their food to extract necessary nutrients needed for growth, energy, and health.

What is the name of Chapter 2 of Class 7 science?

Chapter 2 of Class 7 Science is typically called Nutrition in Animals. It explores how various animals, including humans, digest and use different types of food.

What are the nutrients of animals?

The nutrients of animals include carbohydrates, proteins, fats, vitamins, and minerals. These essential nutrients support various bodily functions and maintain overall health.

What are the 5 processes of nutrition in animals?

The five processes of nutrition in animals are ingestion (taking in food), digestion (breaking down food), absorption (nutrients being absorbed by the body), assimilation (utilizing nutrients), and egestion (expelling waste).

Which type of nutrition is found in animals?

Animals exhibit heterotrophic nutrition, meaning they rely on consuming other organisms—plants or animals—to obtain their nutrients, unlike plants that produce their own food through photosynthesis.