Chapter 21.6, Problem 3MC

Summary Introduction

To determine:

The feature that separates the two classes of annelids and mention the living habitat.

Concept introduction:

Annelids are the segmented organisms belong to subkingdom eumetazoa. Annelids are included under the class lophotrochozoa along with flatworms and mollusks. They are characterized by bilateral symmetry and three germ layers. There are two classes of annelids; one class includes the earthworms and leeches and the other class includes the marine annelids.