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13 Cards in this Set
- Front
- Back
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Phylum Mollusca
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Molluscs
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Mollusc Body Plan
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Muscular foot, visceral mass, and a mantle.
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Mantle
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Is a fold of tissue that drapes over the visceral mass and secretes the shell.
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Trochophore
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Ciliated larval stage.
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Class Polyplacophora
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Chitons, oval-shaped marine animals encased in an armor of eight dorsal plates.
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Class Gastropoda
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Slugs and snails.
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Slugs
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Lack shell.
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Snails
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Have one spiraled shell.
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Torsion
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Causes the animal's anus and mantle to end up above its head.
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Class Bivalvia
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Clams, oysters, mussels, and scallops.
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Class Cephalopoda
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Squids and octopuses
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Siphon
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Allow squids and octopuses to swim quickly.
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Nautiluses
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Shelled cephalopods.
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