Fishes & Mollusks

6. Which of the following is not a mollusk?

   a) Snail

   b) Squid

   c) Octopus

   d) Crab

7. Mollusks have a soft body covered by a muscular organ called:

   a) Exoskeleton

   b) Endoskeleton

   c) Mantle

   d) Shell

8. Which is the largest class of mollusks?

   a) Gastropoda

   b) Cephalopoda

   c) Bivalvia

   d) Polyplacophora

9. Which of the following is not a type of mollusk shell?

   a) Univalve

   b) Bivalve

   c) Multivalve

   d) Gastropod

10. Mollusks have a unique feeding structure called:

    a) Proboscis

    b) Siphon

    c) Radula

    d) Buccal cavity