DENDROLOGY

Detailed explanation-1: -The lowest level of classification is species. Species is basic unit of biological classification that contains the fewest number of organisms and this makes it most specific.

Detailed explanation-2: -The species is the smallest and most exclusive grouping. It consists of organisms that are similar enough to produce fertile offspring together. Closely related species are grouped together in a genus.

Detailed explanation-3: -What are the 8 levels of the Linnaean classification system? From lowest to highest, the present taxonomic system contains eight degrees of hierarchy: species, genus, family, order, class, phylum, kingdom, and domain.