Lecture 2: Feeding and digestion in amoeba; Types of Teeth; Digestion in ruminants

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

Which part of the digestive canal is involved in:

Why do we get instant energy from glucose?

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

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

What are villi? What is their location and function?

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

Tick ( âˆš) 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

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)

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 __________.