Chapter 11 Test Review Answers
1. Flexible supporting rod in the back of chordates.
2. An animal whose body does not produce much heat.
3. The spinal cord
4. Gills
5. External fertilization
6. A goldfish is an example of a bony fish.
7. Pointed, giving the skin a rough texture
8. Lungs and thin moist skin
9. Three
10. A strong skeleton and muscular limbs
11. Delicate skin
12. Produce concentrated urine
13. Skin and kidneys
14. Reptile eggs have a shell and internal membranes
15. Egg has membranes that keep the embryo moist
16. Lizards have legs
17. Chordata
18. It changes
19. An animal whose body does not change much, even when the temperature of the environment changes
20. Jawless
21. Use sharp-edged beaks to tear food
22. It stabilizes the fish at different depths of water. If it was destroyed, the fish would lose that ability.
23. Tadpole
24. Shell
25. Changes in the temperature of the environment
26. Fin- the function is to help the fish move; consists of a thin membrane stretched across bony plates
27. Most fish have external fertilization; sharks have internal fertilization
28. Look at page 383, figure 14
29. Amphibians that keep their tale through adulthood
30. Strong skeletons and muscular limbs
31. See page 379, figure 12
32. See page 379, figure 12
33. Swim bladder contains gas which allows it to stabilize the fish at different depths
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