Question

The levels in classification are called as
A. Families
B. Taxa
C. Orders
D. Kingdoms

Answer 1

Hint: A taxonomic rank is defined by the International Code of Zoological Nomenclature as- the level, for nomenclatural purposes, of a taxon in a taxonomic hierarchy.

Complete answer: In biology, a Taxon (plural form is Taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit.
1. The levels in classification are known as Taxa.
2. In biological classification, taxonomic rank is the level of classification of a group of organisms (a taxon) in a taxonomic hierarchy. The taxonomic ranks are species, genus, family, order, class, phylum, kingdom, domain, etc.

Additional information: Carl Linnaeus in his publication, Systema Naturae, used a ranking scale limited to kingdom, class, order, genus, species, and one rank below species.
1. Nowadays, the nomenclature is regulated by the nomenclature codes.
2. There are seven main taxonomic ranks: kingdom, phylum or division, class, order, family, genus, species. In addition, the domain is proposed by Carl Woese.
3. It is now widely used as a fundamental rank, although it is not mentioned in any of the nomenclature codes, and is a synonym for dominion.
4. In Taxonomy scientific name is divided into two parts- Genera and species.
5. It is written in the italic form and when handwritten it should be underlined.
It is a universal name.

So, the answer is B. Taxa

Note: Scientific classification helps the people to know about a species with a universal name rather than vernacular names that change according to place.
A classification in which all taxa have formal ranks cannot adequately reflect knowledge about phylogeny. Since taxon names are dependent on ranks in traditional Linnaean systems of classification, taxa without ranks cannot be given names.