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Exploring Mollusks and Annelids: Diversity and Adaptations

Delve into the world of mollusks and annelids, from the muscular foot to the segmented body, discover the importance and unique features of these diverse creatures in the animal kingdom. Learn about chitons, clams, earthworms, and more through detailed dissections and fascinating facts. Explore their habitats, feeding habits, and evolutionary significance. Unveil the intricate characteristics that make these creatures fascinating and essential to our ecosystems.

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Exploring Mollusks and Annelids: Diversity and Adaptations

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  1. Lab 38:Kingdom Animalia:Phylum Mollusca

  2. Phylum Mollusca: mollusks Class Polyplacophora: chitons Class Bivalvia: clams, scallops, oysters, mussels Class Cephalopoda: squids, nautilus, octopus Class Gastropoda: snails, limpets slugs, nudibranchs

  3. Phylum Mollusca: mollusks Foot muscular Mantel that secretes shell and covers visceral mass Shell used as protection Radula usually present radula

  4. Class Gastropoda: Snails, slugs, limpets, abalone, seaslugs Most herbivores Banana slug Nudibranchs

  5. Class Bivalvia: clams, mussels, oysters, scallops

  6. Clam Dissection

  7. Class Cephalopoda: squid, octopus, nautilus Nautilus Squid

  8. Class Polyplacophora: chitons

  9. Importance of mollusks http://www.pbs.org/wnet/nature/episodes/the-venom-cure/cone-shell-cures/2061/ • http://guides.library.harvard.edu/content.php?pid=326949&sid=2675461 - -

  10. Kingdom Animalia:Phylum Annelida

  11. Phylum Annelida: segmented worms Cylindrical worms with segmented body Ventral nervous system Closed circulatory system Nephridia Hydrostatic skeleton Circular and longitudinal muscle layers Setae (bristles)

  12. Class Polychaeta: annelids with many setae (chaeta) Parapodia with many setae Free-swimming, burrowing or tube-dwelling

  13. Class Oligochaeta: annelids with few setae Mostly terrestrial and freshwater Clitellum Uses Setae Parapodia

  14. Earthworm Dissection

  15. Class Hirudinea: annelids with no setae Predators adapted for fluid feeding Setae Parapodia

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