Worms with a well-developed circulatory system (including five pairs of hearts) are
A) eels.
B) annelids.
C) nematodes.
D) platyhelminths.
E) echinoderms.
Correct Answer:
Verified
Q31: Ecdysozoans
A) have a body cavity that forms
Q32: A cnidarian that builds a calcium carbonate
Q33: Which cnidarian is the basis of many
Q34: A(n)_ provides support and protection to arthropods.
A)
Q35: An animal such as a grasshopper can
Q37: The phylum Nematoda includes which of the
Q38: _are characterized by having a pseudocoelom.
A) Chordates
B)
Q39: Flatworms lack
A) a digestive cavity.
B) a respiratory
Q40: Which of these groups is characterized by
Q41: In the various cnidarian species
A) all live
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