Q. Operculum is present in
✅ Correct Answer: (B)
sea fish
Explanation:
Operculum is a bony flap that covers and protects the gills in bony fish (Osteichthyes), including most sea fish. It helps in respiration by allowing water to flow over the gills.
Why not the others?
- (A) Birds – Birds do not have gills or operculum; they have lungs for respiration.
- (C) Cartilaginous fish – Sharks and rays (cartilaginous fish) lack an operculum. Instead, they have gill slits for respiration.
- (D) None of these – Incorrect, as operculum is present in bony fish.
Explanation by: Kirti
Operculum is a bony flap that covers and protects the gills in bony fish (Osteichthyes), including most sea fish. It helps in respiration by allowing water to flow over the gills.
Why not the others?
- (A) Birds – Birds do not have gills or operculum; they have lungs for respiration.
- (C) Cartilaginous fish – Sharks and rays (cartilaginous fish) lack an operculum. Instead, they have gill slits for respiration.
- (D) None of these – Incorrect, as operculum is present in bony fish.