🌱 Ace Biology with Diagrams, Concepts & Practice Tools
Biology is a high-scoring subject when approached through conceptual clarity, visual memory, and consistent practice. This Class 12 guide for 2025–26 is built on the official CBSE syllabus and exam pattern — with smart preparation tools from OnlineSelfTest.com to help you master every unit.
📘 CBSE Biology Exam Pattern – Class 12 (2025–26)
The Class 12 Biology exam includes:
| Section |
Question Type |
No. of Questions |
Marks per Question |
Total Marks |
| Section A |
MCQs / Very Short Answer |
16 |
1 |
16 |
| Section B |
Short Answer I |
5 |
2 |
10 |
| Section C |
Short Answer II |
7 |
3 |
21 |
| Section D |
Long Answer |
3 |
5 |
15 |
| Section E |
Case-Based Questions |
2 |
4 |
8 |
| Total |
|
33 |
|
70 |
📚 CBSE Class 12 Biology Syllabus (2025–26)
Unit I: Reproduction
Unit II: Genetics and Evolution
Unit III: Biology and Human Welfare
Unit IV: Biotechnology and Its Applications
Unit V: Ecology and Environment
📊 Chapter-Wise Weightage (Expected – Based on Past Papers & CBSE Trends)
| Chapter No. |
Chapter Name |
Expected Marks |
| 1 |
Reproduction in Organisms |
3 |
| 2 |
Sexual Reproduction in Flowering Plants |
3 |
| 3 |
Human Reproduction |
4 |
| 4 |
Reproductive Health |
4 |
| 5 |
Principles of Inheritance and Variation |
7 |
| 6 |
Molecular Basis of Inheritance |
7 |
| 7 |
Evolution |
4 |
| 8 |
Human Health and Disease |
5 |
| 9 |
Strategies for Enhancement in Food Production |
4 |
| 10 |
Microbes in Human Welfare |
5 |
| 11 |
Biotechnology: Principles and Processes |
5 |
| 12 |
Biotechnology and Its Applications |
5 |
| 13 |
Organisms and Populations |
4 |
| 14 |
Ecosystem |
3 |
| 15 |
Biodiversity and Conservation |
4 |
| 16 |
Environmental Issues |
3 |
| |
Total |
70 |
🌟 High-Scoring Topics to Prioritize
✅ Molecular Basis of Inheritance
✅ Human Health & Disease
✅ Principles of Inheritance
✅ Reproductive Health
✅ Microbes in Human Welfare
✅ Biotechnology – Processes & Applications
✅ Smart Biology Prep Strategy
🧬 Learn Visually & Conceptually
-
Focus on diagram-based questions and labeling (e.g., DNA, human reproductive system, flower)
-
Use flowcharts for complex processes: DNA replication, immunity, bio-gas production
📝 Practice the Right Way
-
Solve MCQs, case-based & assertion-reason questions for each chapter
-
Create chapter-wise quick notes and flashcards for revision
-
Practice long answers with intro-body-conclusion structure
📤 Upload. Practice. Improve. — Powered by OnlineSelfTest.com
🚀 Upload handwritten diagrams and flowcharts for AI-based review
🧠 Get instant feedback on accuracy, labeling, and completeness
📘 Practice MCQs, long answers, and case-based questions chapter-wise
📊 Track weak areas and get improvement suggestions
🧪 Simulate real exams with timed mock tests
🎯 Why OnlineSelfTest.com for Biology?
✅ Chapter-wise NCERT-based question bank
✅ AI feedback for diagrams, long answers & definitions
✅ Daily test reminders & weak-topic suggestions
✅ Progress tracker for all Biology units
✅ Smart prep recommendations for CBSE 2026
🎓 Ace CBSE Biology 2026 confidently with the right blend of conceptual understanding, visual learning, and targeted smart practice — only on OnlineSelfTest.com.
