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This Concept Map, created with IHMC CmapTools, has information related to: classfication mollusca 2 deya, gastropoda has symmetrical body; usually in a coiled shaped, cephalopoda has head with arms or tentacles, cephalopoda has shell reduced or absent, cephalopoda has head well developed with eyes and radula, gastropoda has large and flat foot, phylum mollusca is classified to gastropoda, cephalopoda has well developed nervous system, bivalvia has shell of two lateral valves of variable size and form with dorsal hinge, gastropoda has example like snail, Achatina slugs, sea slugs, phylum mollusca is classified to cephalopoda, gastropoda has calcareous shell secreted by a fold of the dorsal body,wall called the mantle, gastropoda has ahead well developed with radula, a toothed feeding organ, bivalvia has sexes usually separate, cephalopoda has example like squid, Sepia, octopuses, chambered nautilus, phylum mollusca is classified to bivalvia, bivalvia has body enclosed in a two-lobed mantle, bivalvia has example like clam, Anadara, mussels, oysters, bivalvia has head much reduced but mouth with labial palps, cephalopoda has foot modified into a funnel