Question

Operculum is a feature of

• A. Placodermi
• B. Chondrichthyes
• C. Osteichthyes
• D. All of the above

Answer 1

The correct option is C Osteichthyes

Osteichthyes are also called as bony fish. They are the fishes which can live in marine and freshwater. They have an operculum. The gills are covered with the operculum. This operculum helps the fish to breathe. They can breathe without need of swimming. Bony fishes have no placoid scales which are present in the other fishes. There are presence of mucus glands which coats the body. Many species of this group have different types of scales like the overlapping ganoid, cycloid, ctenoid scales.

Thus, the correct answer is option C.