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3 Cards in this Set

  • Front
  • Back

Characteristics:

- Acoelomate (no body cavity)


- Three tissue layers


- Bilaterally symmetric


- Dorsoventrally flattened

Key evolutionary traits:

- Eumetazoa


- Triploblastic


- Protostomes


- Lophnotrochozoa

Classes:

- Turbellaria = free living flatworms


- Trematoda = endoparasitic flukes


- Monogenea = endoparasitic flukes on fish


- Cestoda = tapeworms