. Nomenclature Giza, Inimene, Emberi, Manna, Doanna, Umano ……. In all probability these words must be new to you…but they all mean “Human” in different foreign languages! There are presently more than languages in the world and an animal can be named in more than ways!
Unfortunately it is impossible for anyone to have a good functioning knowledge of most languages and hence there arises a need for a universally accepted scientific naming system for all organisms. The process of assigning scientific names to animals or taxonomic group is called nomenclature. For example, worldwide, the scientific name Homo sapiens denotes human . Classification and grouping were done to facilitate a deeper understanding of the unique characteristics of each organism and its interrelationship among closely related species.
It plays a vital role in the arrangement of known species based on their similarities and dissimilarities. Numerous characters such as morphology, genetic information, habitat, feeding pattern, adaptations, evolution, etc., are examined before an organism is named. One of the primary responsibilities of systematic biology is the development of biological nomenclature and classification. Nomenclature is not an end to systematics and taxonomy but it is necessary in organizing information about biodiversity.
Nomenclature, functions to provide names for all taxa at all levels in the hierarchy of life. Naming of the organisms is done based on the guidelines XI Std Biology-Zoology Chapter- Trinominal nomenclature ( Tri – three) This naming system was proposed by Huxley and Stricklandt, Trinomen means, three names: generic name, species name and sub-species name. When members of any species which have large variations then trinomial system is used. On the basis of dissimilarities, this species gets classified into subspecies.
It is the extension of binominal nomenclature system which has an addition of subspecies. All the three names are set in italics and only the first letter of generic name is capitalized, if handwritten then it should be underlined separately E.g. Corvus splendens splendens (Indian house crow) Tautonymy: The practice of naming the animals in which the generic name and species name are the same, is called Tautonymy. e.g.
Naja naja (The Indian Cobra). What may be the reasons for the extinction of Dinosaurs? If you know the reasons for their extinction, why Sparrows are listed as endangered species? Rules of Nomenclature • The scientific name should be italicized in printed form and if handwritten, it should be underlined separately.
• The generic name’s ( Genus ) first alphabet should be in uppercase. • The specific name ( species ) should be in lowercase. • The scientific names of any two organisms are not similar. • The name or abbreviated name of the scientist who first publishes the scientific name may be written after the species name along with the year of publication.
For example Lion- Felis leo Linn., or Felis leo L ., . • If the species name is framed after any person’s name the name of the species shall end with i, ii or ae. For example, a new species of a ground- dwelling lizard (Cyrtodactylus) has been discovered and named after Scientist Varad Giri, Cyrtodactylus varadgirii .