Lab 38 Kingdom Animalia Phylum Mollusca Phylum Mollusca

Lab 38: Kingdom Animalia: Phylum Mollusca

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

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

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

Class Bivalvia: clams, mussels, oysters, scallops

Clam Dissection

Class Cephalopoda: squid, octopus, nautilus Nautilus Squid

Class Polyplacophora: chitons

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

Kingdom Animalia: Phylum Annelida

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)

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

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

Earthworm Dissection

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