Chapter Review


1. Choose the term that does not belong in the following group, and explain why it does not belong: elapids, vipers, constrictors, and dinosaurs.

2. Explain the relationship between amnion and chorion.

3. Use each of the following terms in a separate sentence: oviparity, ovoviviparity, and viviparity.

4. Word Roots and Origins The word ectotherm comes from the Greek word ecto, meaning "outside" and therm, meaning "heat". The word endotherm comes from the Greek word endo, meaning "within" and therm, meaning "heat". Explain why each term is a good name for the biological process that the term describes.

Understanding Key Concepts

5. Summarize the events that led to the rise of reptiles during the Permian period.

6. Identify three factors that contributed to the success of dinosaurs during the Triassic period.

7. Explain why scientists advocate the asteroid impact hypothesis for dinosaur extinction.

8. Name one example of each of the four modern orders of reptiles.

9. Explain how the evolution of the amniotic egg is an adaptation to life on land.

10. Explain how the respiratory and excretory systems in reptiles show adaptations for life on land.

11. Contrast a turtle's heart and a crocodile's heart.

12. Describe how the structure of a turtle's heart allows for flexibility in blood circulation.

13. Identify the advantage of alveoli in respiration.

14. Describe two senses other than vision and hearing that reptiles use to find prey.

15. Identify the major benefit of ectothermy.

16. Compare the reproductive strategies of oviparity, ovoviviparity, and viviparity.

17. Describe the features that make turtles unique among reptiles.

18. Explain how crocodilians swallow prey underwater.

19. Explain the purpose of a lizard's ability to lose its tail and grow a new one.

20. List three ways in which snakes can inject venom into their prey.

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