Which of the Following Is a Feature of the Digestive

question 7

Multiple Choice

Which of the following is a feature of the digestive tube in most animal phyla?

• 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 tissue that comes from embryonic endoderm.

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