The importance of classification is as follows;
1)Classification makes the study of wide variety of organisms easy.
2)It projects before us a picture of all life forms at a glance.
3)It is essential to understand the inter-relationships among different groups of organisms.
4)It forms a base for the development of other biological sciences,eg-ecology,pathology etc..
5)It provides information about the origin and evolution of various groups of organisms.
Hope it helps!!