Unlike other molluscs,the __________ have a closed circulatory system.
A) univalves
B) gastropods
C) chitons
D) bivalves
E) cephalopods
Correct Answer:
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Q27: Neopilina represents the molluscan class _,that was
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
Q33: The modified veliger of some freshwater bivalves
Q34: The most complex molluscs belong to the
Q35: Cephalopods typically locate prey by
A)sight.
B)tactile senses.
C)olfaction.
D)gustation.
E)echolocation.
Q36: Pigment cells of cephalopods are called
A)pinacocytes.
B)odontophores.
C)chromatophores.
D)erythrocytes.
E)nautilophores.
Q37: The tentacle of male cephalopods that is
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