Oysters are classified in the phylum
A) Echinodermata.
B) Mollusca.
C) Annelida.
D) Platyhelminthes.
E) Arthropoda.
Correct Answer:
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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
Q42: Members of the phylum _are characterized by
Q43: Adult echinoderms that have radial symmetry lack
A)
Q45: Within the mollusks, only the cephalopods have
Q46: The tube feet of echinoderms that are
Q47: The venomous sea wasp is classified in
Q48: A hemocoel or blood cavity is found
Q49: A sea urchin is a member of
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