Author Question: Which characteristic(s) is (are) shared by both cnidarians and flatworms? A) dor (Read 512 times)

Charlie

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Which characteristic(s) is (are) shared by both cnidarians and flatworms?
A) dorsoventrally flattened bodies
B) true muscle
C) radial symmetry
D) a digestive system with a single opening
E) two of these



camila

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Answer has to be D, trust me!



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Charlie

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Wonderful, you were right, thank you so much.



 

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