The animals most like the ancestral protist colonies that likely gave rise to all animals are:
A) chordates.
B) arthropods.
C) sponges.
D) echinoderms.
E) nematodes.
Correct Answer:
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Q50: Adult echinoderms that have radial symmetry lack:
A)a
Q51: In the various cnidarian species:
A)all live as
Q52: Which of the following phyla contains animals
Q53: A hemocoel or blood cavity is found
Q56: A clam is a(n):
A)arthropod.
B)mollusk.
C)chordate.
D)echinoderm.
E)arachnid.
Q57: The venomous sea wasp is classified in
Q58: Spiders belong to the:
A)arthropods.
B)mollusks.
C)chordates.
D)echinoderms.
E)cnidarians.
Q59: Which of the following animals uses a
Q60: A crayfish is a member of the
Q60: Within the mollusks, only the cephalopods have
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