Exercises
1. Fill in the blanks:
(a) The main steps of nutrition in humans are
and
juices which
(bThe largest gland in the human body is
(c) The stomach releases hydrochloric acid and
act on food.
(d) The inner wall of the small intestine has many finger-like outgrowths
called
le) Amoeba digests its food in the
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)
(d) 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)
3. Tickmark the correct answer in each of the following:
(al Fat is completely digested in the
a stomach (in) mouth (iii) small intestine (iv) large intestine
Answers
Answer:
Solution 1: (a) The main steps of nutrition in humans are ingestion, digestion, absorption, assimilation and egestion.
(b) The largest gland in the human body is the liver.
(c) The stomach releases hydrochloric acid and digestive juices which act on the 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...
2.
(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)
3.
(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 √