Neopilina represents the molluscan class __________,that was known only from fossils until 1952.
A) Monoplacophora
B) Aplacophora
C) Polyplacophora
D) Bivalvia
E) Gastropoda
Correct Answer:
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Q22: Chitons belong to the molluscan class
A)Monoplacophora.
B)Scaphopoda.
C)Polyplacophora.
D)Cephalopoda.
E)Bivalvia.
Q23: The diversity of body forms and life-styles
Q24: The shell-secreting organ of bivalve mollusks is
Q25: The only living cephalopods that possess an
Q26: The similarity of design between the eyes
Q28: Sperm packets of cephalopods are called
A)cecae.
B)stylets.
C)cocoons.
D)spermatophores.
E)gonophores.
Q29: Solenogasters are cylindrical molluscs that lack a
Q30: In the bivalves,final digestion occurs
A)in the adductor
Q31: In the bivalves,gas exchange takes place through
Q32: Unlike other molluscs,the _ have a closed
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