NCERT Solutions for Class 7 Science Chapter 2 Nutrition in Animals
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Book Name: Science
Subject: Science
Chapter Number: 2
Chapter Name: Nutrition in Animals
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Book Name: Science
Subject: Science
Chapter Number: 2
Chapter Name: Nutrition in Animals
You can also bookmark this page by clicking + Save to Library icon and refer to these NCERT Solutions anytime from your account. More Detail
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NCERT Solutions for Class 7 Science Chapter 2 Nutrition in Animals – Text
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Page 1
NCERT
SOLUTIONS
CLASS - 7TH
aglase .co
SOLUTIONS
CLASS - 7TH
aglase .co
Page 2
Book : Science Ncert Solutions | Chapter-2 Science
Class : 7th
Subject : Science
Chapter : 2
Chapter Name : Nutrition in Animals
Q1 Fill in the blanks:
(a) The main steps of nutrition in humans are __________, __________, __________, _________ and ________.
(b) The largest gland in the human body is __________.
(c) The stomach releases hydrochloric acid and ___________ juices which act on food.
(d) The inner wall of the small intestine has many nger-like outgrowths called _________.
(e) Amoeba digests its food in the ____________ .
Answer. (a) The main steps of nutrition in humans are ingestion, digestion, absorption, assimilation
and egestion.
(b) The largest gland in the human body is liver.
(c) The stomach releases hydrochloric acid and digestive juices which act on food.
(d) The inner wall of the small intestine has many nger-like outgrowths called villi.
(e) Amoeba digests its food in the food vacuole.
Page : 20 , Block Name : Exercise
Q2 Mark 'T' if the statement is true and 'F' if it is false:
(a) Digestion of starch starts in the stomach. (T/F)
(b) The tongue helps in mixing food with saliva. (T/F)
(c) The gall bladder temporarily stores bile. (T/F)
(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F)
Answer. (a) Digestion of starch starts in the stomach. (F)
(b) The tongue helps in mixing food with saliva. (T)
(c) The gall bladder temporarily stores bile. (T)
(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T)
Page : 20 , Block Name : Exercise
Q3 Tick ( ) mark the correct answer in each of the following:
(a) Fat is completely digested in the
(i) stomach
(ii) mouth
(iii) small intestine
(iv) large intestine
(b) Water from the undigested food is absorbed mainly in the
(i) stomach
(ii) food pipe
(iii) small intestine
(iv) large intestine
Page 1 of 5 Aglasem Schools
Class : 7th
Subject : Science
Chapter : 2
Chapter Name : Nutrition in Animals
Q1 Fill in the blanks:
(a) The main steps of nutrition in humans are __________, __________, __________, _________ and ________.
(b) The largest gland in the human body is __________.
(c) The stomach releases hydrochloric acid and ___________ juices which act on food.
(d) The inner wall of the small intestine has many nger-like outgrowths called _________.
(e) Amoeba digests its food in the ____________ .
Answer. (a) The main steps of nutrition in humans are ingestion, digestion, absorption, assimilation
and egestion.
(b) The largest gland in the human body is liver.
(c) The stomach releases hydrochloric acid and digestive juices which act on food.
(d) The inner wall of the small intestine has many nger-like outgrowths called villi.
(e) Amoeba digests its food in the food vacuole.
Page : 20 , Block Name : Exercise
Q2 Mark 'T' if the statement is true and 'F' if it is false:
(a) Digestion of starch starts in the stomach. (T/F)
(b) The tongue helps in mixing food with saliva. (T/F)
(c) The gall bladder temporarily stores bile. (T/F)
(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F)
Answer. (a) Digestion of starch starts in the stomach. (F)
(b) The tongue helps in mixing food with saliva. (T)
(c) The gall bladder temporarily stores bile. (T)
(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T)
Page : 20 , Block Name : Exercise
Q3 Tick ( ) mark the correct answer in each of the following:
(a) Fat is completely digested in the
(i) stomach
(ii) mouth
(iii) small intestine
(iv) large intestine
(b) Water from the undigested food is absorbed mainly in the
(i) stomach
(ii) food pipe
(iii) small intestine
(iv) large intestine
Page 1 of 5 Aglasem Schools
Page 3
Book : Science Ncert Solutions | Chapter-2 Science
Answer. (a)small intestine.
(b) large intestine
Page : 20 , Block Name : Exercise
Q4 Match the items of Column I with those given in Column II:
Q5 What are villi? What is their location and function?
Answer. Villi are tiny nger-like projections originating from the walls of the small intestine. They
increase the surface area for absorption of the digested food. The blood vessels present inside the
villi can absorb the nutrients from the digested food.
Structure of a villus
Page 2 of 5 Aglasem Schools
Answer. (a)small intestine.
(b) large intestine
Page : 20 , Block Name : Exercise
Q4 Match the items of Column I with those given in Column II:
Q5 What are villi? What is their location and function?
Answer. Villi are tiny nger-like projections originating from the walls of the small intestine. They
increase the surface area for absorption of the digested food. The blood vessels present inside the
villi can absorb the nutrients from the digested food.
Structure of a villus
Page 2 of 5 Aglasem Schools
Page 4
Book : Science Ncert Solutions | Chapter-2 Science
Q6 Where is the bile produced? Which component of the food does it help to digest?
Answer. Liver Secretes the bile juice which is stored in the gallbladder. Bile plays an
important role in the digestion of fats.
Q7 Name the type of carbohydrate that can be digested by ruminants but not by
humans. Give the reason also.
Answer. Cellulose is a type of carbohydrate that can be digested by ruminants and not
by humans. Ruminants have a large sac-like structure between small and large intestine where the
food containing cellulose is digested by the action of certain bacteria. On the other hand, humans
cannot digest cellulose, as the cellulose digesting enzymes are absent in them.
Q8 Why do we get instant energy from glucose?
Answer. Glucose is a simple sugar. Carbohydrates, when consumed, have to be digested into glucose.
As glucose can be easily absorbed in blood, it provides energy to the body. Hence, when glucose is
directly taken, it does not have to be digested and thus acts as an instant source of energy.
Q9 Which part of the digestive canal is involved in:
(i) absorption of food ________________.
(ii) chewing of food ________________.
(iii) killing of bacteria ________________.
(iv) complete digestion of food ________________.
(v) formation of faeces ________________.
Answer: (i) absorption of food small intestine
(ii) chewing of food buccal cavity
(iii) killing of bacteria stomach
(iv) complete digestion of food small intestine
(v) formation of faeces large intestine.
Q10 Write one similarity and one difference between the nutrition in Amoeba and human beings.
Answer. Similarity between nutrition in Amoeba and human beings:
Both Amoeba and humans require energy for the growth and maintenance of their bodies. This
energy is derived from the food that they eat. The food that they consume is always in a complex
form and is therefore broken down into simpler forms by the process of digestion. Hence, both these
organisms are heterotrophs.
Differences between nutrition in Amoeba and human beings:
Page 3 of 5 Aglasem Schools
Q6 Where is the bile produced? Which component of the food does it help to digest?
Answer. Liver Secretes the bile juice which is stored in the gallbladder. Bile plays an
important role in the digestion of fats.
Q7 Name the type of carbohydrate that can be digested by ruminants but not by
humans. Give the reason also.
Answer. Cellulose is a type of carbohydrate that can be digested by ruminants and not
by humans. Ruminants have a large sac-like structure between small and large intestine where the
food containing cellulose is digested by the action of certain bacteria. On the other hand, humans
cannot digest cellulose, as the cellulose digesting enzymes are absent in them.
Q8 Why do we get instant energy from glucose?
Answer. Glucose is a simple sugar. Carbohydrates, when consumed, have to be digested into glucose.
As glucose can be easily absorbed in blood, it provides energy to the body. Hence, when glucose is
directly taken, it does not have to be digested and thus acts as an instant source of energy.
Q9 Which part of the digestive canal is involved in:
(i) absorption of food ________________.
(ii) chewing of food ________________.
(iii) killing of bacteria ________________.
(iv) complete digestion of food ________________.
(v) formation of faeces ________________.
Answer: (i) absorption of food small intestine
(ii) chewing of food buccal cavity
(iii) killing of bacteria stomach
(iv) complete digestion of food small intestine
(v) formation of faeces large intestine.
Q10 Write one similarity and one difference between the nutrition in Amoeba and human beings.
Answer. Similarity between nutrition in Amoeba and human beings:
Both Amoeba and humans require energy for the growth and maintenance of their bodies. This
energy is derived from the food that they eat. The food that they consume is always in a complex
form and is therefore broken down into simpler forms by the process of digestion. Hence, both these
organisms are heterotrophs.
Differences between nutrition in Amoeba and human beings:
Page 3 of 5 Aglasem Schools
Page 5
Book : Science Ncert Solutions | Chapter-2 Science
Q11 Match the items of Column I with suitable items in Column II.
Q12 Label the following gure of the digestive system.
Page 4 of 5 Aglasem Schools
Q11 Match the items of Column I with suitable items in Column II.
Q12 Label the following gure of the digestive system.
Page 4 of 5 Aglasem Schools
Page 6
Book : Science Ncert Solutions | Chapter-2 Science
A part of human digestive system
Page : 22 , Block Name : Exercise
Q13 Can we survive only on raw, leafy vegetables/grass? Discuss.
Answer. No.Humans cannot survive only on raw, leafy vegetables, or grass. It is because the grass is
rich in cellulose, which is a type of carbohydrate that humans are not able to digest due to the
absence of cellulose-digesting enzymes.
Page : 22 , Block Name : Exercise
Page 5 of 5 Aglasem Schools
A part of human digestive system
Page : 22 , Block Name : Exercise
Q13 Can we survive only on raw, leafy vegetables/grass? Discuss.
Answer. No.Humans cannot survive only on raw, leafy vegetables, or grass. It is because the grass is
rich in cellulose, which is a type of carbohydrate that humans are not able to digest due to the
absence of cellulose-digesting enzymes.
Page : 22 , Block Name : Exercise
Page 5 of 5 Aglasem Schools
Document Details
| Board / Org | NCERT |
| Exam | Class 7 |
| Type | Solution |
| Pages | 6 |
| Updated | 30 Apr 2026 |