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

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Have highly developed nervous systemsRapid responses result from giant nerve fibers attached tomantleEyes are elaborate with retina similar to that in vertebratesExhibit complex behaviors and high level of intelligenceTake water into mantle and expel it through siphon for propulsionChange direction of movement with siphonMay eject dark fluid to confuse predatorsMost have closedcirculatory system thatprovides more efficientcirculationSexes are separateSpecialized tentacle in male transmits spermatophore to femaleEggs fertilized as they leave the oviductextensive parental care in some
<strong>Phylum</strong> Annelida - Annelids - Segmented Worms<strong>includes</strong> sandworms, fanworms, bristleworms, earthworms,leechesmost are marine, but they are also commonon land and in freshwater
Page 3 and 4: Mollusk body plan: head-foot, visce
Page 5 and 6: All mollusks except Bivalves posses
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: Class Cephalopoda - Octopus, Squid
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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