Kingdom Animalia Phylum Mollusca Class Gastropoda Class Bivalvia Class Cephlapoda Mollusks 50000 species 10 classes Includes Squid Octopus Clams Conches Snails Sea slugs ID: 442781
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Mollusks
Kingdom Animalia Phylum Mollusca Class Gastropoda Class Bivalvia Class CephlapodaSlide2
Mollusks
50,000 species10 classesIncludes:SquidOctopusClamsConchesSnailsSea slugsOystersSlide3
Basic Anatomical Structures:
a) Mantle – muscular bag that surrounds the gills and most organs and is used to circulate water 1. some use it to circulate water or jet propulsion 2. secretes calcium carbonate shellSlide4
Basic Anatomical Structures:
b) Foot – muscular structure used for movement 1. In snails & slugs it’s used to crawl 2. In bivalves it’s used to dig 3. In squids, it takes the form of tentaclesSlide5
Basic Anatomical Structures:
c) Radula – a tongue like structure with scraping teethSlide6
Class Gastropoda
Includes snails, slugs, whelks, & abaloneDefining Characteristics:RadulaSome have a shellSensitive TentaclesShell-less members can produce toxins or store eaten nematocystsSlide7Slide8
Snails Sea Slugs
Whelks Abalone