Fish Flashcards
(2 cards)
1
Q
What are three fish adaptations?
A
1) Gills (exchange O2 with CO2)
2) Scales (provides protection)
3) Fins (for steering and movement)
2
Q
What are three classes of fish?
A
1) Jawless fish - very small group (Lamprey, hagfish)
2) Cartaliginous fish (Sharks, rays, skates. Endoskeletons made entirely of cartilage)
3) Bony fish (95% of all fish. Skeletons made of bones. Swim bladder - air sac that fills with O2 or N2)
