Chapter 17, Problem 3RQ

Summary Introduction

To describe: The annelid body plan including body wall, segments, coelom, and its compartments and coelomic lining.

Introduction: All the animal species on Earth are classified into different phyla or groups. They are classified on the basis of their characters, morphology, anatomy, and, most importantly their phylogeny. One of these phyla is named as Annelida.  Some examples are marine bristle worms, leeches, and earthworms. Annelids are organisms having segmented bodies.