Binomial Nomenclature: Definition, Rules and Advantages

Tri-Nomial Nomenclature
The Tri-Nomial Nomenclature was given by Lamark. According to this Nomenclature, the name of an organism consists of three words that is why it is called a trinomial system of Nomenclature. The first name is called Generic name, The second name is called Species name or Species epithet and the third name is known as Sub-species for Animals or variety for Plants.