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Which of the Following Is Not a Feature of the Tube-Within-A-Tube

Question 1

Multiple Choice

Which of the following is not a feature of the tube-within-a-tube body plan in most animals?


A) Typically,the outer tube consists of a hard exoskeleton.
B) The inner tube consists of digestive organs.
C) Typically,the mouth and anus form the ends of the inner tube.
D) The two "tubes" are separated by mesoderm tissue.

Correct Answer:

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