Question

Skeleton is made entirely of cartilage in

पर्याय

• Sharks

• Tuna

• Rohu

• None of these

Answer 1

Sharks

Explanation - 

The cartilaginous fish bear a cartila¬ginous endoskeleton i.e. the endoskeleton which is made entirely of cartilage, e.g. sharks (Scoliodon, etc.)
In the bony fish, the endoskeleton is cartilaginous in the embryonic stage, but in adults, it is replaced by bones. Thus they have a bony endoskeleton, e.g., Rohu, Tuna etc.