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Review your knowledge of the major mollusk classes.

Mollusks include three major classes--Gastropoda (gastropods), Bivalvia (bivalves), and Cephalopoda (cephalopods). Look at each image below. Which class does each of these mollusks belong to? Think of the answer, then click "Show Me" to see if you are correct.

Slug

Sea Clam

Cuttlefish

Test your knowledge of the major mollusk classes by sorting each of these mollusks into its correct class.

Click here to begin.
Gastropods Bivalves Cephalopods
snails
slugs
oysters
mussels
scallops
clams
octopuses
squids
nautiluses
cuttlefish
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