The role played by the body shape of a flatworm in exchange of gases with the environment. Concept introduction: Flatworms are included under the phylum Platyhelminthes . Flatworms are characterized by bilateral symmetry and three germ layers. They are included under the class protostomes. Flatworms have flattened body structure.

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Chapter 21.4, Problem 2MC

Summary Introduction

To determine:

The role played by the body shape of a flatworm in exchange of gases with the environment.

Concept introduction:

Flatworms are included under the phylum Platyhelminthes. Flatworms are characterized by bilateral symmetry and three germ layers. They are included under the class protostomes. Flatworms have flattened body structure.

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