Nomenclature: Binomial Nomenclature, Meaning and Definition (For CBSE, ICSE, IAS, NET, NRA 2022)

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  • It is a systematic compilation of authorized terms of descriptors w. r. t to a certain documentation task.
  • In simple terms a nomenclature can be defined as the devising or choosing of names for things, especially in a science or other discipline.
  • One of the examples of nomenclature is the language of sculpture.
  • Consist of three main aspects:
    • Form of coding system.
    • Takes the form of a thesaurus.
    • Often called as descriptors.

Binomial Nomenclature

  • It is a two-term naming system also known as binary nomenclature.
  • The system of binomial nomenclature was introduced by Carl Linnaeus.
  • It is simply a process of standardized naming to avoid any confusion using a standard protocol.
  • It is a formal system of naming species of living things.
  • The first term indicates the genus and the second term indicates the species of the organism.
  • The first part of the generic name identifies the genus to which the species belongs.
  • The second part of the generic name the specific name or specific epithet – identifies the species within the genus.

Examples of Binomial Nomenclature

  • The scientific name of the tiger is presented as Panthera Tigris.
    • Panthera ′ represents the genus.
    • Tigris ′ represents a species.
  • For humans, the scientific name is Homo sapiens.
    • ‘Homo’ represents the genus.
    • ‘Sapiens’ represents a species.

Scientific Classification of Homo Sapiens

Scientific Classification of Homo Sapiens

Rules of Binomial Nomenclature

  • Each scientific name should consist of two parts namely Generic name and Specific epithet.
  • Two international codes to ensure organisms get a specific name being identified globally.
Rules of Binomial Nomenclature
  • The scientific names of organisms should be in Latin and thus should be written in Italics.
  • The first term refers to the genus and the second term refers to the species.
  • To specify the Latin origin the handwritten names should be underlined or italicized if typed.
  • Genus name starts with a capital letter and the species name starts with a small letter.

Drawbacks of Binomial Nomenclature

  • These names are difficult to remember.
  • These names are long & hard to learn for common people.
  • Sometimes taxonomical groups are not fixed in size.
  • According to the law of priority, if two or more names are currently in use the correct name will be the one used first.

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