A hemocoel or blood cavity is found in or associated with:
A) all animals.
B) an open circulatory system.
C) sponges.
D) cephalopods.
E) acoelomates.
Correct Answer:
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Q44: Oysters are classified in the phylum
A) Echinodermata.
B)
Q49: What characterizes a free-living flatworm?
A)tubular gut
B)hooks
C)cuticle
D)eyespots
E)coelom
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
Q55: The animals most like the ancestral protist
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.
Q60: A crayfish is a member of the
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