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Mollusks

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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Mollusks

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  1. Mollusks

  2. 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

  3. 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

  4. CHITONS

  5. 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

  6. Gastropods

  7. 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

  8. Bivalves

  9. 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

  10. Squid

  11. Mollusk Video • http://video.nationalgeographic.com/video/player/kids/animals-pets-kids/invertebrates-kids/nudibranch-kids.html

  12. 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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