| Front | Define operculum. |
|---|---|
| Back | Operculum - bony flap covering gills of bony fish |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Buccal define cavity space gills mouth
Previous card: Water challenges gas exchange systems describe advantages faced
Up to card list: A-Level Biology OCR A