INTRODUCTION - Chapter 2 - Nutrition In Animals - Ncert Solutions class 7

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Question 1:

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 __________.

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 finger-like outgrowths called __villi__.

(e) Amoeba digests its food in the _food vacuole_.

Question 2:

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)

Question 3:

Tick (

√

(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

√