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a structure that is used by molluscs for feeding. It is a minutely toothed, chitinous ribbon that is used for scraping or cutting food before it enters the oesophagus. It is unique to the molluscs, and is found in every class of mollusc except the bivalves.
the passage through which the nerve and blood vessels leave the root of the tooth.
double-membraned, pigmented, cytoplasmic organelles found in plant cells. The organelles have...