Write three important features of cartilaginous fish and bony fish. Also give one examples of each of these.

Question

Write two difference between cartilaginous and bony fishes.

OR

Write three important features of cartilaginous fish and bony fish. Also give one examples of each of these.

Answer 1

Cartilaginous Fish	Bony Fish
(i) Skin is covered by small placoid scales.	Skin is covered with Iarge cycloid or ganoid or ctenoid scales.
(ii) Endoskeleton is cartilaginous	Endoskeleton is partly or wholly bony.
(iii) Tail fin is heterocercal.	Tail fin is homocercal.
(iv) e.g. Sharks, rays	e.g. Labeo, catla