The Most Complex Molluscs Belong to the Class

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

Q12: The 180<sup> <span class="ql-formula" data-value="\circ"><span class="katex"><span

Q13: The adaptation of bivalves to sedentary,filter feeding

Q14: Molluscs are<br>A)deuterostomes.<br>B)ecdysozoaons.<br>C)lophotrochozoans.<br>D)chordates.<br>E)hemichordates.

Q16: The tentacle of male cephalopods that is

Q17: Neopilina represents the molluscan class _,that was

Q18: In the bivalves,final digestion occurs<br>A)in the adductor

Q19: The shell of a mollusc is secreted

Q20: Pigment cells of cephalopods are called<br>A)pinacocytes.<br>B)odontophores.<br>C)chromatophores.<br>D)erythrocytes.<br>E)nautilophores.