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7 Cards in this Set

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Mantle

Highly modified epidermis that covers the soft body



Secretes calcium carbonate that create's the shell

Visceral mass

Houses the internal organs

Mantle cavity

The space between the viscera and the mantle



Gills, when present, are suspended within this cavity

Radula

Portrusible, rasp-like feeding organ present in most species

Bivalvia

Characterized by a hinged shell of two valves



Clams, scallops, oysters

Gastropoda

Posses helical shells



Snails, slugs, whelks, limpets, abalones, nudibranchs

Cephalopoda

Squid, octopods, nautiloids



Leack external shell abd posses a siphon for jet propulsion