How many embryonic cell layers do flatworms have?

How many embryonic cell layers do flatworms have?

  • Correct Answer: three
  • five
  • two
  • four

Explanation: Flatworms have three embryonic cell layers. They have a mesoderm layer in addition to ectoderm and endoderm layers. The mesoderm layer allows flatworms to develop muscle tissues so they can move easily over solid surfaces.

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