Question

In fishes, the exoskeleton is made of:

• A. Cartilage
• B. Bones
• C. Hairs
• D. Scales

Answer 1

The correct option is D Scales

A. Cartilage is a kind of structural component in the body.

B. Bones are the living tissue in the body.

C. Hairs are the protein filaments growing from follicles present in skin or dermis.

D. A scale is an appendage or a rigid plate present on an animal's skin for protection.

In fishes, the exoskeleton is made up of scales.

So, the correct answer is option D.