Mollusks

OverviewMOLLUSKS LIVE IN FRESH-WATER, SALTWATER, AND

TERRESTRIAL HABITATSTHEY ARE ONE OF THE MOST DIVERSE GROUPS HAVING

OVER 150,000 KNOWN SPECIESTHEY ARE INVERTEBRATESREPRODUCE SEXUALLYMOVE USING LOCOMOTION WHICH CONSISTS OF THE

MANTLETHEY MANTLE ALSO ASSISTS IN DIGESTION USING

SECRETIONTHEY USE THE RADULA TO SCRAPE FOR FOODALL MOLLUSKS MOVE USING A FOOTTHE FOUR GROUPS OF MOLLUSKS ARE CHITONS,

GASTROPODS, AND BIVALVES AND SQUID

ChitonsCHARACTERIZED BY THEIR

SEGMENTED SHELLUSUALLY THEIR HABITAT CONSISTS OF

ROCKY SHORELINES, AND SHELLY OCEAN BOTTOMS EVERYWHERE IN THE OCEAN

BODY IS SYMMETRICAL COVERED BY 8 PLATESPROTECTS ITSELF BY ROLLING UP

INTO A BALLEAT SEAWEED AND ALGAE

CHITONS

GastropodsCONSIST OF SNAILS, SLUGS, AND

WELKSMOST 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

Gastropods

BivalveCHARACTERIZED BY TWO PRESSING

SHELLSJOINED BY A DORSAL END CALLED A

LIGAMENTTHE SHELL IS COMPRESSEDMOST BIVALVES ARE FILTER EATERS

BY SOME ARE CARNIVOROUSTHEY ARE FOUND FROM SEASHORE TO

DEEP-SEA HABITATSTHEY COVER AND DIG THEMSELVES IN

MUD AND SAND FOR PROTECTION AND OR TO LIVE

Bivalves

SquidLARGER HEAD AND A LARGER BRAININTERIOR SKELETONTWO LATERAL FINSAROUND THE MOUTH THERE ARE 8 SUCK

BEARING ARMS, TWO CONTRACTILE TENTACLES THAT ARE LONGER THAN THE REST OF THE ARMS

THE FASTEST INVERTEBRATEFEED ON FISH BY GRABBING THEM WITH

THEIR TENTACLES, AND EATING THEM LIKE A BIRD TEARS FLESH

Squid

Mollusk Videohttp://

video.nationalgeographic.com/video/player/kids/animals-pets-kids/invertebrates-kids/nudibranch-kids.html

Cited Sourceshttp://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