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

dracko

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

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.

Textbook

Biological Science, Canadian Edition

Biological Science, Canadian Edition

Edition: 2^nd

Authors: Freeman, Shar, Harrington

Read 60 times

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hayley2007

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dracko Author

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Thanks for your help!!

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