What is the largest group of organisms?
To facilitate the study of the kinds and diversity of organisms, biologists have evolved certain rules and principles for the identification, nomenclature, and classification of organisms. The branch of biology dealing with these aspects is Taxonomy.
In classification, the organisms which closely resemble one another are placed together in a group. The groups which have similarities with each other are combined to form larger groups. Thus, an animal or plant group having natural relations is known as the Taxonomic category.
There are seven major categories. The Kingdom is the higher category of taxonomic studies. Other major categories in descending order include phylum, class, order, family, genus and species.
The largest group of organisms is Kingdom.
Kingdom: