At present time, about 1.7 million species of animals and plants (about 0.5 million plants and 1.2
million animals) have been reported. All living beings are linked to each other by the sharing of the common
genetic material. The study of these living beings is not possible without their proper classification.
Classification : Organisms are divided into different groups on the basis of their similiarities &
dissimiliarities that is called classification.
Taxonomy : It is branch of science that deals with identification, nomenclature and classification of
living beings. The term Taxonomy used by A.P. de Candolle in his book ‘Theory of elementary de la