Diversity in Living World
The scientific study of various aspects that attempts to recognize, describe, name and arrange the diverse organissm according to an organized plan based on the unique features of species and groups is known as systematics.
Systematics mainly involves four steps , i.e., identification , classification , nomenclature and taxonomy.
Classification is basically the scientific arrangement of an organism in a specific hierarchial series of groups on the basis of similarities and differences.
Aristotle classified animals on the basis of their habitats.
The hierarchial system or series of classification was introduced by Linnaeus . The major categories of hierarchy are given below.
phylum /division (for animal) —> class —> order —> family —> genus —> species
Higest is phylum
Lowest is species