Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...

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Basic body plan has been modified for different purposes in thedifferent classes - Chitons closest to basic plan. Gastropods havetwisted visceral mass. Bivalves have lost head, and gills areused for feeding. Cephalopods have modified foot into tentacles,and mantle is used for jet propulsion.
All mollusks except Bivalves possess a rasping, tongue-like,radula - composed of dozens of rows of chitinous teethSome gastropods scrape algae with radula, others use radula totear apart prey or drill holes in shells of their prey
Page 3: Mollusk body plan: head-foot, visce
Page 7 and 8: ReproductionMost have separate sexe
Page 9 and 10: Class Gastropoda - Snails and Slugs
Page 11 and 12: Class Bivalvia - BivalvesIncludes c
Page 13 and 14: Class Cephalopoda - Octopus, Squid
Page 15 and 16: Phylum Annelida - Annelids - Segmen
Page 17 and 18: Segments are specialized for specif
Page 19 and 20: Class Polychaeta - Polychaetes -“
Page 21: Class Hirudinea - LeechesMost are f

Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...

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