Chapter 29 Outline

Kingdom Animalia: Protostomes

Molluscan, annelid, and arthropod diversity is discussed with reference to the evolution of the three-part body plan, segmentation, and jointed appendages.

Chapter 29 Outline

In this chapter outline, the learning objectives and the selected key terms are given for each major head in the chapter.

1. List and discuss several advantages of having a coelom.

2. List the embryological differences between protostomes and deuterostomes,

and tell which animal phyla belong to each group.

Selected Key Terms: coelem, cleavage, protostome, deuterostome

Three-Part Body Plan (p. 486)

3. Describe the general characteristics of mollusks and the specific features of

selected classes.

4. Contrast the anatomy of the snail, the clam, and the squid, indicating how each

is adapted to its way of life.

mollusk, bivalve, cephalopod, gastropod

Segmentation Evolves (p. 490)

5. Describe the general characteristics of annelids and the specific features of

the three major classes.

6. Contrast the anatomy of the clam worm and the earthworm, indicating how each

is adapted to its way of life.

segmentation, annelid, nephridium, seta, oligochaete, leech

Jointed Appendages Evolve (p. 493)

7. Describe the general characteristics of arthropods and the specific features of

the three major subphyla.

8. Describe the general characteristics of insects, using the grasshopper as an

example.

9. Contrast the anatomy of the crayfish and the grasshopper, indicating how each

is adapted to its way of life.

exoskeleton, jointed appendage, arthropod, chitin, molt, trachea, metamorphosis,

chelicerate, cephalothorax, crustacean, decapod, hemocoel, uniramian, centipede,

millipede, Malpighian tubule
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