Question

Question 23
Skeleton is made entirely of cartilage is found in

(a) Sharks
(b) Tuna
(c) Rohu
(d) None of these

Answer 1

(a) Sharks

Skeleton made entirely of cartilage is found in sharks.

Unlike terrestrial animals, humans, and even other marine animals, sharks’ skeletons are made purely of cartilage and connective tissue, or muscle. There is no bone.

This type of skeleton means that the shark is lighter, as cartilage is about half the density of bone.

Tuna and rohu are made up of both bone and cartilage.