Multiple Choice
Which of the following is a feature of the tube-within-a-tube body plan in most animals?
A) The outer tube consists of a hard exoskeleton.
B) The outer tube consists of digestive organs.
C) The mouth and anus form the ends of the inner tube.
D) The two "tubes" are separated by endoderm tissue.
Correct Answer:
Verified
Correct Answer:
Verified
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