Question

When food is put in our mouth , the teeth cut, chew and
grind it. The glands A present in mouth secrete a
watery liquid B which helps to digest component C
present in food partially. This partially digested food
then passes through tube D into an organ E secrete
mucus , hydrochloric acid and digestive juices.
(a) What are (i) A (ii) B (iii)C (iv) D (v)E.
(b) Name the component of food which is broken down
by digestive juices secreted by E

Answer 1

Answer:The extensive chemical process of digestion begins in the mouth. As food is chewed, saliva, produced by the salivary glands, mixes with the food. Saliva is a watery substance produced in the mouths of many animals. There are three major glands that secrete saliva: the parotid, the submandibular, and the sublingual.