Thank you for reporting, we will resolve it shortly
Q.
A genus with a single species is called
NTA AbhyasNTA Abhyas 2020
Solution:
Taxonomic hierarchy is the system of arrangement of taxonomic categories in descending order. It was introduced by Linnaeus in 1751, who initially proposed five categories (class, order, genus, species and variety).
However, variety was obliterated and four new categories were introduced. Thus, the seven obligate categories in descending order are kingdom, phylum or division, class, order, family, genus and species.
The placement of individuals or organisms in taxonomic categories is determined by their specific similar characters, dissimilarities, complexity and evolutionary relationships.
Genus: A genus may have one to many species. As per rules of binomial nomenclature, a species can be named only if it is assigned to a genus. All the species of a genus have a number of common features referred to as correlated characters.
A genus with a single species is known as monotypic. For example, Homo is monotypic with a single species of Homo sapiens.
A genus with two or more species is known as polytypic. For example, the genus Solanum with S. tuberosum, S. melongina and S. lycopersicum.