Phylum Mollusca
Soft-bodied organisms
Many protect themselves with a shell produced by an organ called the
"mantle"
Shell has 3 layers
periostracum - outer
perismatic - middle
nacre ("mother of pearl") - inner
Class Polyplacophora - chitons
Class Bivalvia - clams, oysters,
etc.
Class Gastropoda - snails and
slugs
Class Cephalopoda - octopus
and squid
Lab pictures
other images
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