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Download Animal Class or Subclass/Facts C: Polyplacophora C: Gastropoda
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Animal Class or Subclass/Facts C: Gastropoda C: Gastropoda C: Gastropoda SC: Prosobranchia SC: Opisthobranchia SC: Pulmonata Organ level, bilateral, tiprlo, Organ level, bilateral, tiprlo Organ level, bilateral, tiprlo Special organs if any Radula Radula General Body Plan/skeleton or special organs Eight plate shell, gills, direct development, mantle forms a girdle, Body Cavity Eucoelomate Nervous System Digestive/Excretory/ Circulatory Systems Level of organization/symmetry /triploblastic C: Polyplacophora C: Cephalopoda C: Bivalvia Organ level, bilateral, tiprlo Organ level, bilateral, tiprlo Organ level, bilateral, tiprlo Radula Radula Radula No Radula Undergone torsion and shell coiling, all have shells with operculum Undergone detorsion, haave gills, nudibranchs no shell, and sea slugs have reduced shell Some have undergone torsion whereas other have undergone detorsion, slugs have no or reduced shell, snails have no operculum on shell Head foot is modified with highly developed sense organs, shell can be present, reduced or absent Shell in two parts (valves) reduced head, gills and lips modified for help in filter feeding. Eucoelomate Eucoelomate Eucoelomate Eucolomate Eucoelomate Cephalization and Cephalization and ventral nerve cord ventral nerve cord Cephalization and ventral nerve cord Cephalization and ventral nerve cord Cephalization and ventral nerve cord Cephalization and ventral nerve cord Complete/ Complete/ Complete/ Complete/ Complete/ Complete/ metanephridia/ open metanephridia/ open metanephridia/ open metanephridia/ metanephridia/ open CLOSED metanephridia/ open Reproduction Sex, Sex Sexual reproduction and lots of these are hermaphrodites Sexual reproduction Sexual sexual Life Cycle direct development and no veliger larvae Eggs in protective capsules Lay gelatinous eggs in marine environments Eggs gelatinous Egg capsules guarded by female Some freshwater clams complex life cycles with glochidia and fish hosts Special species to know No none None None None Shipworms; the family of Unionidae clams Exceptions if any Cryptochiton has 8 plaits covered by flesh and you can’t see them Some of these snails are predators feeding on other molluscs Some nudibranchs store undischarged nematocysts in cnidosacs. These nematocysts are obtained when the snails feed on Cnidarians; sea hairs secret ink for defense against predators Know Dextral, Sinistral and Planospiral shells and which is coiled to the right or left. Know that cephalopods are the smartest invertebrates out there; Bioluminescence in some; and know some of their general biology characteristics Know unionid clams are endangered because of the button industry and pearl industry
