Question

please guys answer the sub part (c) urgently

Answer 1

Earthworms move with help of tiny, stiff hair-like projections called bristles.
Every body segment of the earthworm possesses setae which help in their movement. Setae get firm hold on the ground.
Earthworms move forward by repeated contractions and relaxations of their muscles in the skin.
A slimy substance secreted by the earthworm helps in its movement.

Answer 2

4 true
5 ball and socket joints
6 hinge joint
7 true
8 by tendons
Hope I helped u