Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...
Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...
Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...
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Class Polychaeta - Polychaetes -“many bristles” - marine wormsHave well developed heads withspecialized sensory and feeding structuresHave paddle-like parapodia - forlocomotion and aid in gasexchange - with many bristlescalled “setae”Separate sexes with externalfertilization -Have trochophore larva - likesome mollusksAn important link in marine foodchains - many live in associationwith sponges, mollusks,echinoderms, crustaceans