Chapter 1: The Living World – NEET Botany
Study The Living World, The Living World NEET Botany Chapter 1 guide covers the essential concepts students need for NCERT-based Biology learning and NEET preparation.
Taxonomic Categories
Organisms are arranged in a hierarchy of categories. Each category represents a taxonomic rank.
The principal taxonomic categories, from the lower to the higher rank, are:
Species → Genus → Family → Order → Class → Phylum/Division → Kingdom
1. Species
Species is the basic unit of classification. It generally includes organisms that share important characteristics.
2. Genus
A genus includes closely related species.
3. Family
A family consists of related genera that share common characteristics.
4. Order
An order includes related families.
5. Class
A class includes related orders.
6. Phylum or Division
Related classes are grouped into a phylum in animals or a division in traditional botanical classification.
7. Kingdom
A kingdom is a higher taxonomic category that includes related phyla or divisions.
Understanding the Hierarchy
As we move from species towards kingdom, the groups generally become larger and include a wider variety of organisms. The number of shared characteristics generally decreases at higher taxonomic ranks.
Key Takeaway
The taxonomic hierarchy provides an organised system for classifying organisms, from species to kingdom.