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Home Q & A Board Biology-Related Homework Help General Biology
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Arroyo21 Arroyo21
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6 years ago
The organs of excretion in flatworms are
  a. nephridia.
  b. contractile vacuoles.
  c. Malpighian tubules.
  d. flame cells.
  e. book lungs.

Question 2

The first phylum with three germ layers is
  a. Cnidaria.
  b. Platyhelminthes.
  c. Annelida.
  d. Arthropoda.
  e. Nematoda.
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dymasrajadymasraja
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6 years ago
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Arroyo21 Author
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#2
6 years ago
What an excellent community, thanks for answering
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