Acornworms
A) are usually found in deep water zones.
B) do not have hearts but do have blood vessels.
C) have gill pores and gill slits.
D) all of the above
Correct Answer:
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Q28: Acorn worms
A)belong to the phylum HemichordatA.
B)have a
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Q51: Minute,pincer-like _ are found on the surfaces
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Q75: The ancestor of the echinoderms had _
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