In the life cycle of the fluke responsible for schistosomiasis, the intermediate host is
A) a human.
B) another fluke.
C) a snail.
D) a fish.
E) unknown at this time.
Correct Answer:
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Q4: Animals that are hermaphroditic usually
A) fertilize their
Q5: Nematocysts are used for _.
A) reproduction
B) excretion
C)
Q6: The organs of excretion in flatworms are
A)
Q49: Nematocysts are found only in
A)cnidarians.
B)nematodes.
C)crustaceans.
D)echinoderms.
E)sponges.
Q51: Which body plan is characterized by simple
Q52: The bulk of a jellyfish consists of
A)mesoderm.
B)mesohyl.
C)mesophyll.
D)mesoglea.
E)mesogel.
Q53: Tissues derived from mesoderm are absent in
A)sponges.
B)cnidarians.
C)flatworms.
D)sponges
Q55: Colonial cnidarians
A)include Obelia.
B)include the Portuguese man-of-war.
C)include corals.
D)may
Q56: In the life cycle of a typical
Q57: Cnidarians do NOT have
A)tentacles equipped with nematocysts.
B)three
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