Leeks can be quite sandy, so careful washing is important. Hereâs how to properly clean a whole leek. 1  Start by removing the outer layer of white (unless it is very fresh or from your own garden).  Trim the base with a sharp paring knife to remove all the roots.
Taxon. Definition. noun, plural: taxa. (taxonomy). (1) Any group or rank in a biological classification into which related organisms are classified.(2) A taxonomic unit in the biological system of classification of organisms, for example: a phylum, order, family, genus, or species.Supplement.axon. Definition. noun, plural: taxa. (taxonomy). (1) Any group or rank in a biological classification into which related organisms are classified.
In biology, a species (abbreviated sp. , with the plural form species abbreviated spp. ) is one of the basic units of biological classification and a taxonomic rank.pecies hypothesized to have the same ancestors are placed in one genus, based on similarities. The similarity of species is judged based on comparison of physical attributes, and where available, their DNA sequences.