Question

Choose the correct answers from the alternatives given.
Sharks and bony fish are different in that only:

• A. bony fish have paired fins
• B. bony fish have an operculum
• C. sharks have a bony skeleton
• D. sharks are predaceous

Answer 1

The correct option is B bony fish have an operculum

Sharks and bony fish are two fish groups. Sharks are cartilaginous fish. They have a cartilaginous skeleton. Bony fish have a skeleton made from calcified bones. Sharks and bony fish belong to the class Chondrichthyes and Osteichthyes respectively. This is the difference between sharks and bony fish. Bony fish also have an operculum. The operculum is a bony flap of skin over their gills that protects the gills. It opens and closes to help bony fish breathe when they are not swimming. Bony fish have scales, and most species have a fusiform body design.

So, the correct option is, 'bony fish have an operculum'.