Chapter 31.6, Problem 2SB

Summary Introduction

To review:

The anatomical characteristics that reveal close evolutionary relationships of ectoprocts, brachiopods, and phoronid worms.

Introduction:

The phoronid, brachiopods, and ectoprocts worms come under the group of bilateria and are bilaterally symmetrical and have triploblastic development. They possess pseudocoelom and sensory organs at the anterior end of their body plan. They also have organ systems to perform specific functions.