Question

Endoskeleton of fishes are made up of cartilage and bone; classify the following fishes as cartilaginous or bony:
Torpedo, Sting ray, Dog fish, Rohu, Angler fish, Exocoetus. [3MARKS]

Answer 1

Identification : 0.5 Mark each

Torpedo — Cartilaginous
Sting ray — Cartilaginous
Dog fish — Cartilaginous
Rohu — Bony
Angler fish — Cartilaginous
Exocoetus — Bony