EVERYDAY SCIENCE

Detailed explanation-1: -Taxonomic hierarchy refers to the sequence of categories in increasing or decreasing order. Kingdom is the highest rank and species is the lowest rank in the hierarchy.

Detailed explanation-2: -The lowest category is species and the highest category is the kingdom in both plants and animals in the present hierarchy. The following taxonomic hierarchy with seven obligate categories is used at present: Kingdom.

Detailed explanation-3: -Linnaeus’ hierarchical system of classification includes seven levels. They are, from largest to smallest, kingdom, phylum, class, order, family, genus, and species.

Detailed explanation-4: -The current taxonomic system now has eight levels in its hierarchy, from lowest to highest, they are: species, genus, family, order, class, phylum, kingdom, domain.