Cnidarians and ctenophores are similar in that they both have
A) radial symmetry.
B) mesoderm.
C) a digestive tract with two openings.
D) a pseudocoel.
E) nematocysts.
Correct Answer:
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Q10: Most members of the phylum Platyhelminthes
A)are free-living.
B)exhibit
Q11: All of the following are general characteristics
Q12: The mantle in mollusks
A)secretes the shell and
Q13: It is generally thought that animals have
Q14: The closest living protistan relatives to animals
Q16: In cnidarians, what is found between the
Q17: Clams, oysters, and scallops are called bivalves
Q18: These are members of the phylum Cnidaria.
A)sponges
B)comb
Q19: This class of mollusk includes snails.
A)Bivalvia
B)Annelida
C)Gastropoda
D)Pseudopoda
E)Cephalopoda
Q20: The segmented worms of the phylum Annelida
A)have
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