The inner layer of the mollusc shell is the __________ layer.
A) radular
B) prismatic
C) nacreous
D) helix
E) periostracum
Correct Answer:
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Q14: Snails,slugs,and limpets belong to the molluscan class
A)Gastropoda.
B)Pelecypoda.
C)Polyplacophora.
D)Aplacophora.
E)Cephalopoda.
Q15: The oldest part of the bivalve shell
Q16: The space between the mantle and foot
Q17: The shell of a mollusc is secreted
Q18: There are roughly _ described species in
Q20: The rasping structure occurring in the mouth
Q21: Tooth shells belong to the molluscan class
A)Bivalvia.
B)Cephalopoda.
C)Polyplacophora.
D)Gastropoda.
E)Scaphopoda.
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
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