Biological Classification — Revision Notes
CBSE · Class 11 · Biology
Biological Classification revision notes for CBSE Class 11 Biology: 4 topics in quick points. Key terms: Aristotle was the earliest, The two and R.
Interactive on Super Tutor
Studying Biological Classification? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.
Free trial, no card needed.
Key Topics to Revise
1. Historical Basis of Classification
- Aristotle was the earliest scientist to attempt a scientific basis for classification.
- He classified plants into trees, shrubs and herbs.
- He classified animals into red-blooded and non-red-blooded groups.
2. Kingdom Monera
- Bacteria are the sole members of Kingdom Monera.
- Bacteria are the most abundant microorganisms and occur almost everywhere.
- Bacteria show the most extensive metabolic diversity among many organisms.
3. Kingdom Protista
- All single-celled eukaryotes are placed under Protista.
- The boundaries of Protista are not well defined.
- Protista includes Chrysophytes, Dinoflagellates, Euglenoids, Slime moulds and Protozoans.
4. Kingdom Fungi
- Fungi are a unique kingdom of heterotrophic organisms.
- With the exception of yeasts, fungi are filamentous.
- The body of a fungus consists of hyphae, and the network of hyphae is called mycelium.
Get complete notes with diagrams and examples
Full NotesKey Concepts
Frequently Asked Questions
What are the important topics in Biological Classification for CBSE Class 11 Biology?
How should I revise Biological Classification for Class 11 exams?
Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Biological Classification
Practice Quiz
Test yourself with a quick quiz
Important Questions
Exam-style questions with answers
Chapter Summary
Understand the chapter at a glance
Concept Maps
See how topics connect
Study Plan
Step-by-step plan for this chapter
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Biological Classification chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for CBSE Class 11 Biology. Free to start, no card needed.