Ncert solutions science class 7 Solutions for Chapter 2 nutrition in animals

Exercises in Chapter 2 nutrition in animals Grade 7

Exercise

Questions in Exercise

The stomach releases hydrochloric acid and ___________ juices which act on food

Which part of the digestive canal is involved in:

(i) absorption of food ________________.

The main steps of nutrition in humans are _________, __________, __________, _________ and

__.

Which part of the digestive canal is involved in:

complete digestion of food ________________.

Which part of the digestive canal is involved in:

formation of faeces ________________.

Which part of the digestive canal is involved in:

chewing of food ________________.

Water from the undigested food is absorbed mainly in the

Tick () mark the correct answer in each of the following:

(a) Fat is completely digested in the

The tongue helps in mixing food with saliva. (T/F)

Digestion of starch starts in the stomach. (T/F)

Which part of the digestive canal is involved in:

killing of bacteria ________________.

Amoeba digests its food in the ____________ .

The largest gland in the human body is __________.

The inner wall of the small intestine has many finger-like outgrowths called _________.

The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F)

The gall bladder temporarily stores bile. (T/F)

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 finger-like outgrowths called _________.

(e) Amoeba digests its food in the ____________ .

Q1)Fill in the blanks:

(a) The main steps of nutrition in humans are __________, __________, __________, _________ and __________.

(b) The largest gland in the human body is __________.

(d) The inner wall of the small intestine has many finger-like outgrowths called _________.

(e) Amoeba digests its food in the ____________ .

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)

(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)

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)

(d) The ruminants bring back swallowed grass into their mouth and chew it for some time. (T/F)

Q3) Tick (ü) 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) foodpipe (iii) small intestine (iv) large intestine

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) foodpipe (iii) small intestine (iv) large intestine

Match the items of Column I with those given in Column II:

Match the items of Column I with those given in Column II:

Q4) Match the items of Column I with those given in Column II:

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

Q5)What are villi? What is their location and function?

What are villi? What is their location and function?

What are villi? What are their location and function?

Where is the bile produced? Which component of the food does it help to digest?

Q6) Where is the bile produced? Which component of the food does it help to

digest?

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

Q7) Name the type of carbohydrate that can be digested by ruminants but

not by humans. Give the reason also.

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

Why do we get instant energy from glucose?

Q8)Why do we get instant energy from glucose?

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 ________________.

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 ________________.

Write one similarity and one difference between nutrition in amoeba and human beings.

Q10) Write one similarity and one difference between the nutrition in amoeba

and human beings.

Write one similarity and one difference between nutrition in amoeba and human beings

Q11) Match the items of Column I with suitable items in Column II

Column I	Column II
(a) Salivary gland	(i) Bile juice secretion
(b) Stomach	(ii) Storage of undigested food
(c) Liver	(iii) Saliva secretion
(d) Rectum	(iv) Acid release
(e) Small intestine	(v) Digestion is completed
(f ) Large intestine	(vi) Absorption of water
	(vii) Release of faeces