Question

which part of the alimantry canal is involved in (a) chewing of food (b) killing of bactaria (c) absorpation of food (d) formation of faeces ​

Answer 1

Answer:

(a)Buccal cavity

(b)Stomach

(c)small intestine

(d)Large intestine

Explanation:

(a)The buccal cavity contains teeth and salivary glands. The teeth break down the food into smaller parts and the salivary glands excrete saliva which mixes with the food and breaks down the starch present in them.

(b)The stomach excretes an acid known as hydrochloric acid (HCl) which kills the germs present in food(if any)

(c)The small intestine contains a number of small projections present at its surface which increase the surface area and absorbs food. It contains blood capillaries which absorb all the useful nutrients.

(d)The food passed through the small intestine goes into the large intestine. It absorbs all the leftover nutrients from the food and converts it into faeces then sends for excretion