Chapter 44

Biology: How Life Works · 6 exercises

Problem 1

Draw a simplified animal tree of life, indicating the relationships among sponges, cnidarians, protostomes, and deuterostomes.

6 step solution

Problem 3

Compare and contrast the anatomical organization of sponges and cnidarians. How do these differences shape their functional biology, especially feeding mode?

6 step solution

Problem 4

Describe feeding habits that do not require a head.

4 step solution

Problem 5

Name three features that account at least in part for the success of insects.

3 step solution

Problem 7

List features common to bony fish, amphibians, amniotes, and mammals.

5 step solution

Problem 8

Describe the evolutionary significance of the Cambrian explosion.

6 step solution

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