NEET Exam > NEET Notes > Biology Class 11 > Taxonomical Categories
Taxonomical Categories - Biology Class 11 - NEET PDF Download
Taxonomic Categories
Classification is the process of grouping organisms that are genetically similar. The groups that share characteristics are combined to form larger groups.The various grouping levels or ranks in classification are known as taxonomic categories.
Example: Insects represent a group of organisms sharing common features like three pairs of jointed legs.
There are seven main taxonomic categories:
Taxonomic Hierarchy
Taxonomic hierarchy is the process of arranging various organisms into successive levels of the biological classification either in a decreasing or an increasing order from kingdom to species and vice versa.
Organisms are classified into similar categories namely kingdom, phylum, class, order, family, genus, and species.
1. Species
Species (used both as singular and plural) is a natural population of individuals or groups of populations that resemble one another in all essential morphological and reproductive characteristics so that they are able to interbreed freely and produce fertile offspring. It has the lowest taxonomic characteristics. Individuals can be distinguished due to distinct morphological features.- For example, the scientific name of mango is Mangifera indica, where "Mangifera" is the genus and "indica" is the species. The scientific name of potato is Solanum tuberosum, where "Solanum" is the genus and "tuberosum" is the species.
MULTIPLE CHOICE QUESTIONTry yourself: Which taxonomic category has the lowest level of classification?
2. Genus
It is a group or assemblage of related species that share certain associated characteristics. Correlated Characters are those similar or common features used to classify a taxon above the rank of species.- All the species of a genus are presumed to have evolved from a common ancestor.
- Among animals, for example, the species of horses and zebras from the genus Equus, lion, and tiger are placed under the genus Panthera.
3. Family
It is a taxonomic category that contains one or more related genera.- All the genera of a family have some common features or correlated characters.
- They are separable from the genera of a related family by important and characteristic differences in both vegetative and reproductive features.
- Example: The genera of cats (Felis) and leopards (Panthera) are included in the family Felidae.
4. Order
Order is a more specific rank than class. The category includes one or more related families.- Plant families such as Convolvulaceae and Solanaceae are classified in the order Polymoniales based on their floral characteristics.
- In the animal family, Felidae and Canidae are included in the same order Carnivora.
5. Class
A class is a group of one or more related orders.- Example: The class dicotyledonous (Dicotyledonae, dicotyledons) of flowering plants contains all dicots which are grouped into several orders.
- For example order Primata comprising monkeys, gorillas and gibbons are placed in Class Mammalia along with order Carnivora which includes animals like tiger, cat, and dog all having a common feature that is hair on skin and milk glands.
6. Division/Phylum
It is a category of related animals of classes.- The term phylum is used for animals, while division is commonly used for plants.
- A division of phylum is formed of one or more classes.
- For example, Chordata is a phylum that includes organisms that share characteristics such as a notochord and a dorsal hollow neural system, so based on these characteristics phylum chordate of animals contains not only class mammalian but also Aves (birds), reptilian (reptiles), amphibians (amphibians), Cyclostomata, Chondrichthyes, Osteichthyes (fishes), etc.
MULTIPLE CHOICE QUESTIONTry yourself: What taxonomic category includes one or more related genera?
7. Kingdom
It is the highest taxonomic category of biological classification.- For example, all plants are included in the kingdom Plantae while all animals belong to the kingdom Animalia.
- There are some extra categories, like subdivision, suborder, subfamily, tribe, sub-tribe, etc. They are not regularly used. They are used only when they are needed.
Note:
As we go higher from species to kingdom, the number of common characters decreases. Lower the taxa more are the characteristics that the members within the taxon share. Higher the category, greater is the difficulty of determining the relationship to other taxa at the same level.
Try yourself: The similarities among the taxa decrease as it becomes more inclusive.TRUE/FALSE
Note:
These taxonomic categories/groups are distinct biological entities and not merely morphological aggregates.
Examples of Taxonomic Categories
The document Taxonomical Categories is a part of the NEET Course Biology Class 11.
All you need of NEET at this link: NEET
FAQs on Taxonomical Categories
| 1. What are the different taxonomical categories and how do they rank from largest to smallest? |  |
Ans. Taxonomical categories form a hierarchical classification system arranged as: Kingdom, Phylum, Class, Order, Family, Genus, and Species (KPCOFGS). Kingdom represents the broadest grouping of organisms, while Species is the most specific rank. Each taxonomical rank becomes progressively more exclusive, helping biologists organize and identify organisms systematically based on shared characteristics.
| 2. How do genus and species work together to identify an organism scientifically? | |
Ans. Genus and species combine to form binomial nomenclature, the scientific naming system for living organisms. The genus name (capitalized) and species name (lowercase) together create a unique identifier for each organism-for example, *Homo sapiens* for humans. This two-part naming convention allows scientists worldwide to reference organisms precisely without confusion, regardless of local common names or language barriers.
| 3. Why are there so many taxonomical ranks when scientists could just use kingdom and species? | |
Ans. Intermediate taxonomical categories (Phylum, Class, Order, Family) reveal evolutionary relationships and shared ancestry among organisms at different levels. Kingdom and species alone would create massive gaps in classification. These intermediate ranks group organisms that share specific characteristics-for instance, all mammals share the Class Mammalia despite vast differences between a whale and a bat, making evolution and adaptation patterns clearer.
| 4. What's the difference between taxonomical categories and taxons, and which one should I study for NEET? | |
Ans. Taxonomical categories are ranks in the classification system (Kingdom, Phylum, Class, etc.), while taxa are actual groups of organisms placed within those ranks. For NEET, students must understand both concepts: how categories function as organizational levels and how taxa represent real biological groups. Mastering this distinction is crucial for answering questions about organism classification and phylogenetic relationships in the exam.
| 5. How can I remember the taxonomical classification order and not confuse the ranks during my NEET preparation? | |
Ans. The memory aid "King Philip Came Over For Good Soup" represents Kingdom, Phylum, Class, Order, Family, Genus, Species in descending hierarchical order. Students preparing for NEET should use mind maps and flashcards to visualize this ranking system. EduRev offers detailed notes and visual worksheets on taxonomical categories that reinforce rank ordering through diagrams, making retention easier during revision and reducing confusion during the actual exam.
About this Document
24.9K Views
4.62/5 Rating
May 11, 2026 Last updated
Document Description: Taxonomical Categories for NEET 2026 is part of Biology Class 11 preparation. The notes and questions for Taxonomical Categories have been prepared according to the NEET exam syllabus. Information about Taxonomical Categories covers topics like and Taxonomical Categories Example, for NEET 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Taxonomical Categories.
Introduction of Taxonomical Categories in English is available as part of our Biology Class 11 for NEET & Taxonomical Categories in Hindi for Biology Class 11 course. Download more important topics related with notes, lectures and mock test series for NEET Exam by signing up for free. NEET: Taxonomical Categories
Description
Taxonomical Categories of Biology Class 11 covers all the important topics, helping you prepare for the NEET exam on EduRev. Start for free!
Information about Taxonomical Categories
In this doc you can find the meaning of Taxonomical Categories defined & explained in the simplest way possible. Besides explaining types of Taxonomical Categories theory, EduRev gives you an ample number of questions to practice Taxonomical Categories tests, examples and also practice NEET tests
Related Searches
Taxonomical Categories, mock tests for examination, Viva Questions, Extra Questions, Previous Year Questions with Solutions, Free, study material, Taxonomical Categories, past year papers, Objective type Questions, Taxonomical Categories, pdf , video lectures, Exam, MCQs, Sample Paper, Semester Notes, Important questions, Summary, shortcuts and tricks, ppt, practice quizzes;