Taxonomy is that branch of biology which manages the identification and naming of organisms. A genus is a taxonomic category that deals with the biological classification of living and fossil organisms, as well as viruses in biology. In the ladder of biological classification, the genus is above species and below family category. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus taxonomic category. All the individuals of a particular organism, such as rose plants, belong to a taxonomic category called genus.