CBSE has released the Class 12 Biology sample papers for the 2025–26 academic session.
With the new dual-board exam format—allowing students to appear in either November or March—these sample papers have become a must-have for effective preparation. Biology is a theory-based subject that requires strong concept clarity and good writing skills. These sample papers help you understand the latest exam pattern, important question types, and how to manage your time during the exam. In this article, we cover everything you need to know about the Class 12 Biology sample papers for 2025–26 For effective practice, make sure you're familiar with the latest Class 12 Biology Syllabus 2025–26.
CBSE Class 12 Biology SQP 2025-26
a) CBSE Class 12 Biology Year-wise Sample Papers
Here, we have provided the complete list of all CBSE Sample Papers for Class 12 Biology that teachers and students can download.
b) How to Access the Latest Class 12 Biology Sample Papers?
There are several ways to access the most up-to-date Biology sample papers:
Follow these simple steps to get the latest Biology sample papers 2025-26:
Visit the CBSE Academic Website → Sample Question Papers → Class XII → Biology
c) CBSE Class 12 Biology Additional Practice Papers
The Biology CBSE Class 12 additional papers released by CBSE with its marking scheme can help students prepare as per the exam pattern.
<red> ➜ <red> Class 12 Biology Set 1 SQP + Marking Scheme
<red> ➜ <red> Class 12 Biology Set 2 SQP + Marking Scheme
Understanding the Class 12 Biology Exam Paper
The Class 12 Biology Sample Paper 2025-26 is aligned with the latest exam pattern of the CBSE; this will help you understand the exam format and types of questions you may receive in the exam.
a) Key Changes in the Exam Pattern for Biology (2025–26)
Though the dual-board structure is new, the exam blueprint for Biology remains broadly similar. However, you'll need to align your preparation with the specific term pattern (November and March).
Here's the breakdown for Biology Class 12:
| Section |
Marks |
| Theory |
70 |
| Practical |
30 |
| Total |
100 |
The theory paper is further divided as:
| Unit |
Marks |
| Reproduction |
14 |
| Genetics and Evolution |
18 |
| Biology and Human Welfare |
14 |
| Biotechnology and its Applications |
10 |
| Ecology and Environment |
14 |
| Total (Theory) |
70 |
b) Biology Board Paper Pattern 2025-26 - Section-wise
The Biology paper follows a comprehensive pattern covering life processes, genetic mechanisms, and ecological relationships with both theoretical understanding and practical applications.
Section A: Multiple Choice Questions (20 marks)
- 20 MCQs covering all units with 1 mark each
- Topics include reproductive strategies, genetic inheritance, biotechnology applications, and ecosystem dynamics
Section B: Very Short Answer Questions (10 marks)
- 5 questions worth 2 marks each
- Quick definitions, process explanations, and diagram labeling
Section C: Short Answer Questions (24 marks)
- 8 questions worth 3 marks each
- Detailed process descriptions, genetic problem solving, and experimental explanations
Section D: Long Answer Questions (12 marks)
- 2 questions worth 6 marks each
- Comprehensive process analysis, complex genetic crosses, and ecosystem interactions
Section E: Case Study Questions (4 marks)
- 1 case-based question with sub-parts
- Real-life applications of biological concepts and current research scenarios
Key topics include: Sexual Reproduction in Plants, Human Reproduction, Molecular Basis of Inheritance, Evolution, Microbes in Human Welfare, Biotechnology, and Biodiversity Conservation.
How Does the Two-Exam Format Affect Biology Preparation?
The new format introduces two full exams in a year, requiring a focused and structured preparation plan:
- November Exam (Exam 1): May feature questions based on fundamental biological processes, basic genetic concepts, and core reproductive mechanisms
- March Exam (Exam 2): Will likely include advanced evolutionary concepts, complex biotechnology applications, and detailed ecological interactions
Practising Biology Sample Papers Before Exams Helps in:
- Mastering diagram drawing and labeling for reproductive systems, genetic processes, and ecological pyramids
- Understanding experimental procedures and their biological significance
- Improving speed in solving genetic problems and pedigree analysis
- Building confidence in explaining biotechnological processes and their applications
- Developing analytical skills for ecosystem dynamics and environmental issues
- Getting familiar with current biological research and its implications
How to Use Biology Sample Papers 2025-26 effectively?
- Practice in timed conditions: Especially for diagram drawing and long descriptive answers
- Focus on accurate diagrams: Draw clear, labeled diagrams for cellular processes, organ systems, and genetic mechanisms
- Refer to marking schemes: To understand expected level of detail in process explanations and experimental descriptions
- Master all units systematically: Ensure balanced preparation across Reproduction, Genetics, Human Welfare, Biotechnology, and Ecology
- Practice terminology accuracy: Use correct biological terms, scientific names, and process nomenclature
- Use sample papers to strengthen problem-solving: Practice genetic crosses, population genetics calculations, and ecological pyramid analysis
In conclusion, regular practice with Class 12 Biology sample papers is key to mastering the dual-exam format and excelling in both board exams. These papers help you build biological thinking, refine your analytical skills, and gain confidence in tackling both theoretical concepts and practical applications. Until the official 2025–26 papers are released, make use of previous years' papers and trusted resources like Educart to stay ahead.
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Stay tuned for latest update and all the best for your preparation!
Frequently Asked Questions
Q1. What is the exam pattern for the CBSE Class 12 Biology sample paper (2025–26)?
- Theory: 70 marks | Practical: 30 marks
- Duration: 3 hours for theory, 3 hours for practicals
- Theory sections: Includes MCQs, very short answer, short answer, case-based, and long-answer questions. Competency-wise weightage: 50% knowledge, 30% application, 20% higher-order thinking.
Q2. What is the marking and competency distribution?
- Knowledge & Understanding: 35 marks (50%)
- Application of Concepts: 21 marks (30%)
- Analysis & Evaluation: 14 marks (20%)
- Practical exam includes: Experiments, spotting, viva, record, project – total 30 marks.
Q3. How many sample papers should I solve and when should I begin?
- Aim for 4–6 full-length sample papers to cover question variety and improve answer writing.
- Start 1–2 months before exams, ideally after covering 80–90% of the syllabus. Use CBSE official marking schemes to self-evaluate.
Q4. How should I best utilize the sample papers 2025-26?
- Simulate real exam conditions: Complete theory paper in 3 hours.
- Self-assess rigorously using the marking scheme.
- Identify weak areas to focus revision on organic, genetics, and ecology topics.
- Use sample papers for revision and practice to improve speed and accuracy.
Q5. Where can I download free sample papers with solutions?
CBSE Academic website: Official sample papers with marking schemes (PDF) for Class 12 Biology.
Sample-paper collections: Platforms like Educart host CBSE Class 12 sample papers (2025–26) with solutions
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