In the hierarchy of classification, which grouping will have the smallest number of organisms with maximum common characteristics and which will have the largest number of organisms?

Explanation

Species which lie at the bottom of the taxonomic ladder bear the smallest number of organisms and since the members of a species can interbreed among themselves, they possess maximum characteristics in common. In the hierarchy of classification, kingdom is at the top. It bears the largest number of organisms because a kingdom is split into several phyla, classes, orders, families, genera and species, each having their specific characteristics.