How are the areas of study-evolution and classification interlinked ?

Explanation

a. The modern systern of classification is also called phylogenetic classification which means it is based on evolutionary relationships. Hence, evolution and classification are closely related.
b. Classification involves grouping of organisms into a formal system based on similarities in internal and external structrue or evolutionary history. When two species are closely related, they have more characteristics in common. And if two species are more closely related. then it means they have a more recent ancestor.
For eg in a family, a brother and sister are closely related and they have a recent common ancestor i.e., their parents. Cousins are also related but less than the siblings. This is because the cousins have a common ancestor i.e., their grandparents in the second generation whereas the parents were from the first generation.
With subsequent generations, the variations make organisms more different than their ancestor
This dicussion clearly proves that we classify organisms accordings to their resemblance which is similar to creating an evolutionary tree.