The Circulatory System of Cephalopods Is More Efficient Than Other

Q11: The _ is the outer layer of

Q12: One group of molluscs in particular,the _,serve

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

Q14: Torsion in gastropods caused the mantle cavity

Q15: The muscles which hold the valves of

Q17: Chitons have eight plates embedded in their

Q18: Locomotion in most of the Bivalvia is

Q19: Most cephalopod molluscs can change colors because

Q20: In coelomate animals,the coelom<br>A)develops as a secondary

Q21: Because of "coiling," most gastropods can be