One Group of Molluscs in Particular,the _____________,Serve as Intermediate Hosts

Q7: The nudibranchs belong to the<br>A)ProsobranchiA.<br>B)Opisthobranchia.<br>C)Pulmonata.<br>D)Scaphopoda.

Q8: The pulmonate snails lack gills,and their mantle

Q9: The mantle cavity in a mollusc houses

Q10: Molluscs with a tubular shell,open at both

Q11: The _ is the outer layer of

Q13: Many freshwater clams have specialized,parasitic _ larvae.

Q14: Torsion in gastropods caused the mantle cavity

Q15: The muscles which hold the valves of

Q16: The circulatory system of cephalopods is more

Q17: Chitons have eight plates embedded in their