- Life Sciences
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 breaking down of large, complex food particles into smaller, soluble molecules which can be...
produced, growing, living, or occurring naturally in a particular region or environment.
elongated cells in the xylem of vascular plants that transport water and mineral salts.
an informal term for any living species which appears to be the same as a species otherwise only...