Based on Their Body _______, Flatworms, Rotifers, and Ribbon Worms

Based on their body _______, flatworms, rotifers, and ribbon worms were not thought to be closely related. However, _______ showed that they are a _______ group.

A) plans; the fossil record; monophyletic
B) cavities; gene sequencing; monophyletic
C) cavities; the fossil record; polyphyletic
D) plans; gene sequencing; monophyletic
E) cavities; gene sequencing; polyphyletic

Correct Answer:

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