What is the need for classification

The correct answer is to: characterized them and study them on the based of shared characteristics, similarities and phylogeny.

Explanation:

Arranging different type of organisms on the basis of their shared characteristics such as physical similarities, anatomical characters, phylogeny, habitat they share and many more, in order to study them easily known as classification.

Classification helps understanding the diversity of living organisms with the help of their features, similarities and differences. Aim of the classifying organisms is to, identification of organisms, to establishing the evolutionary relation among different type of organisms and studying the phylogeny.

the answer is d p: cell, q: organ, r: organ system, s: tissue