Chitons Belong to the Molluscan Class

Q2: In the bivalves,gas exchange takes place through

Q3: The shell-secreting organ of bivalve mollusks is

Q4: Solenogasters are cylindrical molluscs that lack a

Q5: The modified veliger of some freshwater bivalves

Q6: Cephalopods typically locate prey by<br>A)sight.<br>B)tactile senses.<br>C)olfaction.<br>D)gustation.<br>E)echolocation.

Q7: The class of molluscs that contains the

Q8: There are roughly _ described species in

Q9: Tooth shells belong to the molluscan class<br>A)Bivalvia.<br>B)Cephalopoda.<br>C)Polyplacophora.<br>D)Gastropoda.<br>E)Scaphopoda.

Q10: The circulatory system of most molluscs is<br>A)hydraulic.<br>B)incurrent.<br>C)closed.<br>D)excurrent.<br>E)open.

Q11: The gastropod larval stage in which torsion