Taxonomy classification of all living beings || By - Neettyari

Classification is not a single step process but involves hierarchy of steps in which each step represents a rank or category. Since the category is a part of overall taxonomic arrangement, it is called the taxonomic category and all categories together constitute the taxonomic hierarchy.

Organisms are classified into groups of various hierarchy levels on the basis of shared characteristics are as follows :

Taxonomic classification of all living beings


Species is the basic taxonomic unit in the Classification of plants and animals. In other words, the species are the smallest group of individuals which are consistently and persistently different from other groups. It includes the organisms with distinct features that are capable of interbreeding among themselves. However, in these cases, species are usually identified by their physical resemblance arising out of their common ancestry. In fact, each species is a gene pool which is adjusted in a given environment.


Genus is a group of related species which has more characters in common in comparison to species of other genera. For example :- potato and brinjal are two different species but both belong to the genus Solanum.


The next category, family has a group of related genera with still less number of similarities as compared to genus and species. For example :- legumne family (Fabaceae) consists of several genera of pulses, such as Pisum, Glycine, phaseolus, etc.


A group of closely related families from an order. The families of an order show close resemblance in certain fundamental features. However, the similar characters are less in number as compared to different genera included in a family. For example :- families Convolvulaceae and Solans earn have been placed in the same order Polemoniales mainly based on the floral characters.


A class represents a group of related orders. For example :- class Dicotyledonous of angiosperms include several orders like Ranales, Parietales, Rosales etc.


Division/phylum is only next to Kingdom and represents organisms belonging to different classes. In case of plants, classes with a few similar characters are assigned to a higher category called Division. However, in case of animals, the phylum is used in place of Division for this category.


The largest unit of classification is Kingdom, for example, plant and animal kingdom. All the animals belonging to various phyla are assigned to the kingdom Animalistic in the Classification system of animals. Similarly, the Kingdom Plantar comprises all the plants from various divisions.

Also read :-

What is cyanobacteria

The shoot system of a plant

The root system of a plant

What is Chromosome

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