| Text | Circulation is of closed type. Cyclostomes are marine but migrate for spawning to fresh water. After spawning, within a few days, they die. Their larvae, after metamorphosis, return to the ocean. |
|---|
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Petromyzon lamprey
Previous card: Cyclostomata body devoid scales paired fins cranium vertebral
Up to card list: @r$ NCERT BIOLOGY CLASS 11 ANIMAL KINGDOM