Zoology Final

3. indicates the presence of four muscular limbs and feet with toes and fingers
7. ventral portion of the shell of a turtle
9. having more than one male mate
10. primitive mammals that lay large yolky eggs
11. olfactory receptors present in reptiles; used to sample airborne chemicals
15. separates the nasal and oral cavities of some mammals and reptiles
16. line the tip and trailing edge of the wing of a bird
17. gas exchange through moist surfaces of mouth and pharynx
18. egg of reptiles, birds, and mammals. Promote gas exchange
19. primitive mammals that lay large yolky eggs
20. periodic renewal of feathers
22. members of the mammalian group characterized by the presence of a placenta
24. period of development of the young in viviparous animals
25. refers to dorsal portion of a turtle's shell

1. receptor of infrared radiation on the head of snakes
2. having one mate at a time
4. periodic round trips of animals between breeding and nonbreeding areas
5. having more than one female mate
6. provide insulation for adult and immature birds
8. tough, water resistant protein found in the epidermal layer of skin of reptiles, birds, and mammals
12. gas exchange across the skin
13. surface that provides lift by using currents of air it moves through
14. provide flight surfaces and are responsible for plumage colors
21. produces and secretes milk to nourish developing young
23. adaptation that allows lizards to detach a portion of tail