Question

What is the function of gizzard in earthworm?

(a) Secretion of digestive enzymes

(b) Grinding soil particles and leaves

(c) Absorption of water

(d) It is a respiratory structure

This question was posed to me in unit test.

The query is from Animals Structural Organisations in chapter Structural Organisations in Animals of Biology – Class 11

Answer 1

Correct option is (b) Grinding soil particles and leaves

To elaborate: The gizzard has the principal role of grinding soil particles and decaying leaves. It does not secrete digestive enzymes nor does it play a role in water absorption. It is not a respiratory structure and only helps in the mechanical breakdown of food.