Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...
Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...
Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...
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Class Gastropoda - Snails and SlugsPrimarily marine, with many freshwaterand terrestrial formsMost have shell, shell lost in <strong>slugs</strong>Head possess paired tentacles that mayhave terminal eyesVisceral mass asymmetricalbecause of torsion (twisting)during development120° twist results in loss of rightgill and positioning of anus to theright of the headCoiling of shell due to one side ofsnail growing faster than other -not due to torsion
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