In this chapter you will learn the essential life functions of mollusks and annelids. You will identify features that are characteristic of both phyla, and you will explore how the different classes of mollusks and annelids fit into the world.

In this chapter, you will: explain how mollusks perform their essential life functions describe and give examples of the three major classes of mollusks describe how annelids perform their essential life functions list and give examples of three classes of annelids