Question

Assertion (A): Rays, skates and sharks are cartilaginous fishes.

Reason (R): They have a cartilaginous endoskeleton.

विकल्प

• Both A and R are true and R is correct explanation of the assertion.

• Both A and R are true but R is not the correct explanation of the assertion.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true and R is correct explanation of the assertion.

Explanation:

Rays, skates and sharks belong to class Chondrichthyes, whose members have a cartilaginous endoskeleton. This feature explains why they are called cartilaginous fishes.