Operculum is present in_____________?
Correct answer: A. bony fish
- A. bony fish
- B. sea fish
- C. cartilaginous fish
- D. none of these
Explanation
An operculum is a bony flap that covers and protects the gills of bony fish, helping direct water over the gill surfaces. Cartilaginous fish generally have separate exposed gill slits and lack a bony operculum, making them the likely alternative choice. “Sea fish” is too broad because both bony and cartilaginous fishes can live in the sea.
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