Which Statement About Ecdysozoans Is True

question 211

Multiple Choice

Which statement about ecdysozoans is true?

• A) All are wormlike, and their Hox genes indicate they are polyphyletic.
• B) All have a thin cuticle, and molting evolved several times.
• C) The hard exoskeleton is composed of chitin and is does not fossilize.
• D) All possess a cuticle, and their Hox genes indicate they are monophyletic.
• E) They are all marine forms, and all exchange gases through the body wall.

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