Having a standard taxonomic system benefits the scientific community by allowing scientists from all over the world to do

Have a common understanding in the classification of organisms

Explanation:

Taxonomy plays an important role in the classification of organisms to study the organisms on the basis of their properties. Taxonomy is a branch of biological science that explains the identification, characterization, naming and classification of the organisms thus it is helpful to understand the different types of organisms that are present in the biosphere. Taxonomy makes the scientist come on one point about the unknown organisms according to morphology, anatomy, physiology and some other properties of the organisms. Thus a common understanding is generated among scientists of the world.

It's cell theory. easy name i would think.