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Classification of Living Organism: Categories of Classification

Living organisms show diversities in their structure, functions and behavior. Depending on their similarities and differences, organisms are classified into small groups and large groups. The process of dividing organisms in small group and large group is called as classification.

Categories of classification:

The group of organism formed by their similarities and differences constitute taxa or taxon. Each taxon has a specific level of similarities and differences. Kingdom is the first category of taxon and then successive family, genus and species. Similarities of organism are increases from kingdom to species and differences are decrease.

Species: It is a group of organism that shows maximum similarities and capable of interbreeding. They are capable to give rise to fertile offspring.

Genes: A group of species form genus that are having common ancestor.

Family: A group of genera forms family that possesses certain common characters.

Order: A group pf family who inter-related with each other forms order.

Class and Division (Phylum): A group of orders forms class and group pf class forms division.

Kingdom: A group of division forms kingdom. It is the largest group pf living organism. Differences are higher and similarities are very less in Kingdom.

Below is the chart that shows the system of classification in order.

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