(A) (i) How does Paramecium obtain its food ? (ii) List the role of each of the following in our digestive…
(A) (i) How does Paramecium obtain its food ?
(ii) List the role of each of the following in our digestive system :
(a) Hydrochloric acid (b) Trypsin (c) Muscular walls of stomach (d) Salivary amylase
Solution
(A) (i) Food enters through a specific spot with the help of movement of cilia.
(ii)
(a) Creates an acidic medium which facilitates the action of enzyme / kills microorganisms ingested with the food.
(b) Digestion of proteins
(c) Mixing the food thoroughly with digestive juices. / pushes food forward by peristalsis.
(d) Conversion of starch into sugar