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Mollusks. Overview. Mollusks Live in Fresh-Water, Saltwater, and Terrestrial Habitats They are one of the most diverse groups having over 150,000 known species They are Invertebrates Reproduce Sexually Move using locomotion which consists of the mantle

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overview
Overview
  • Mollusks Live in Fresh-Water, Saltwater, and Terrestrial Habitats
  • They are one of the most diverse groups having over 150,000 known species
  • They are Invertebrates
  • Reproduce Sexually
  • Move using locomotion which consists of the mantle
  • They Mantle also assists in Digestion using secretion
  • They use the Radula to scrape for food
  • All mollusks move using a foot
  • The Four groups of Mollusks are Chitons, gastropods, and Bivalves and Squid
chitons
Chitons
  • Characterized by their segmented shell
  • Usually their habitat consists of rocky shorelines, and shelly ocean bottoms everywhere in the ocean
  • Body is Symmetrical
  • Covered by 8 plates
  • Protects itself by rolling up into a ball
  • Eat seaweed and algae
gastropods
Gastropods
  • Consist of Snails, Slugs, and Welks
  • Most of the Gastropod family are herbivores, however, some gastropods are carnivores
  • Compared to Chitons, Gastropods are characterized by their gills and other body parts
  • Their shell is either internal or external
  • They have a torted body
bivalve
Bivalve
  • Characterized by two pressing shells
  • Joined by a dorsal end called a ligament
  • The shell is compressed
  • Most bivalves are filter eaters by some are carnivorous
  • They are found from seashore to deep-sea habitats
  • They cover and dig themselves in mud and sand for protection and or to live
squid
Squid
  • Larger Head and a larger brain
  • Interior skeleton
  • Two Lateral Fins
  • Around the mouth there are 8 suck bearing arms, two contractile tentacles that are longer than the rest of the arms
  • The fastest invertebrate
  • Feed on fish by grabbing them with their tentacles, and eating them like a bird tears flesh
mollusk video
Mollusk Video
  • http://video.nationalgeographic.com/video/player/kids/animals-pets-kids/invertebrates-kids/nudibranch-kids.html
cited sources
Cited Sources
  • http://paleo.cortland.edu/tutorial/Ceph&Gast/gastropods.htm
  • http://animaldiversity.ummz.umich.edu/site/accounts/information/Bivalvia.html
  • http://animals.jrank.org/pages/1908/Bivalves-Bivalvia.html
  • http://encarta.msn.com/encyclopedia_761552165/Squid.html
  • http://www.allsands.com/science/animals/squidinformatio_yrw_gn.htm
  • http://video.nationalgeographic.com/video/player/kids/animals-pets-kids/invertebrates-kids/nudibranch-kids.html
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