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CBSE Class 12 Biology Question Paper 2025 with Solutions PDF Download

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Class 12 Biology Question Paper 2025 PDF Download - FREE PDF

CBSE Class 12 Biology Question Paper 2025 is an essential resource for students preparing for the 2026 board exams. This practice paper is prepared based on the latest CBSE exam pattern, offering students an understanding of the paper structure, question types, and the marking scheme expected in the final exam.


The solved PDF includes detailed section-wise answers for all topics covered in the CBSE Class 12 Biology Syllabus. Additionally, students will find important chapters, and essential marking hints that will help in exam preparation. The solved PDF highlights key chapters, offering essential marking hints to help students focus on high-weightage areas. It also includes accurate diagrams for topics with clear labelling to ensure full marks.


We recommend that students solve the Class 12 Biology previous year question paper in a timed, exam-like environment for effective practice. You can download the Class 12 Biology Question Paper 2025 PDF for free from this page and use it to test your preparation. After completing the paper, compare your answers with Vedantu’s detailed solutions to identify mistakes, improve accuracy, and strengthen your performance before the final exam.


CBSE Class 12 Biology Setwise Question Papers 2025

Competitive Exams after 12th Science
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Unit-wise Weightage for CBSE Class 12 Biology 2025

The Class 12 Biology syllabus is divided into five major units, each carrying a specific weightage in the final marking scheme. Understanding the marks distribution across these units will help students prioritise their efforts and focus on the areas that carry more weight.


Unit

Title

Marks

VI

Reproduction

16

VII

Genetics and Evolution

20

VIII

Biology and Human Welfare

12

IX

Biotechnology and its Applications

12

X

Ecology and Environment

10


Total

70


CBSE Class 12 Biology Question Paper Design 2025

Competency

Description

Weightage

Marks (out of 70)

Question Types Included

Demonstrate Knowledge and Understanding

Assessing students’ ability to recall, comprehend, and explain fundamental concepts, definitions, and facts.

50%

35

Objective-type questions, Very Short Answer, Short Answer

Application of Knowledge/Concepts

Evaluates the application of biology concepts and theories in real-life scenarios, experiments, and case studies.

30%

21

Case-based questions, Application-based Short Answer

Analyse, Evaluate, and Create

Tests analytical skills, critical evaluation, data interpretation, and creative thinking in biological contexts.

20%

14

Case-based questions, Long Answer, Analysis-based Short Answer


CBSE Class 12 Biology Chapter-wise Weightage 2025-26

Unit

Chapter

Weightage

Unit VI: Reproduction

Sexual Reproduction in Flowering Plants

7 marks

Human Reproduction

6 marks

Reproductive Health

3 marks

Total

16 marks

Unit VII: Genetics and Evolution

Principles of Inheritance and Variation

8 marks

Molecular Basis of Inheritance

8 marks

Evolution

4 marks

Total

20 marks

Unit VIII: Biology and Human Welfare

Human Health and Diseases

9 marks

Microbes in Human Welfare

3 marks

Total

12 marks

Unit IX: Biotechnology and Its Applications

Biotechnology – Principles and Processes

6 marks

Biotechnology and Its Applications

6 marks

Total

12 marks

Unit X: Ecology and Environment

Organisms and Populations

5 marks

Ecosystem

3 marks

Biodiversity and Its Conservation

2 marks

Total

10 marks


Important Chapters to Focus for the 2026 Biology Board Exam

To excel in the Class 12 Biology Board Exam 2026, it’s crucial to prioritize chapters that carry significant marks weightage. Based on the CBSE Class 12 Biology Marking Scheme, here are the most important chapters that students should focus on:


  1. Molecular Basis of Inheritance

Understand the core concepts of DNA replication, transcription, translation, and gene regulation.

  1. Principles of Inheritance and Variation

Learn Mendelian genetics, inheritance patterns, and genetic disorders.

  1. Human Reproduction

Focus on the anatomy of the human reproductive system and processes such as fertilization and gametogenesis.

  1. Reproductive Health

Gain insights into reproductive health, contraception, and sexually transmitted diseases (STDs).

  1. Human Health and Diseases

Be thorough with diseases, their causes, and preventive measures, including immunity and vaccines.

  1. Biotechnology: Principles and Processes

Learn about genetic engineering, cloning, and the applications of biotechnology in medicine and agriculture.

  1. Ecosystem and Biodiversity

Study ecological concepts like energy flow, food chains, and the conservation of biodiversity.


Practice with Vedantu’s Class 12 CBSE Board Solved Papers | Biology 2025

Preparing for the Class 12 Biology Board Exam 2025? Vedantu has you covered! Our Biology Class 12 Question Paper 2025 is designed to help you practice effectively and improve your exam performance. These solved papers are aligned with the latest CBSE guidelines, giving you a clear understanding of what to expect in the real exam.


The Class 12 Biology Question Paper 2025 is available for download, and you can use it to:


  • Familiarize yourself with the exam pattern: Get a feel for the type of questions and marking scheme.

  • Build your time-management skills: Practice solving the paper within the given time frame.

  • Strengthen your understanding: Compare your answers with Vedantu's solutions and identify areas for improvement.

  • Improve your confidence: Regular practice with previous years' papers helps reduce exam anxiety and enhances your chances of scoring higher marks.


Download the Biology Class 12 2025 Question Paper today and start your journey toward exam success with Vedantu’s expert resources!


CBSE Class 12 Biology Year-wise Question Papers (2014-2024)


Subject-wise Class 12 Previous Year Question Paper


Related Study Material Class 12 Biology

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FAQs on CBSE Class 12 Biology Question Paper 2025 with Solutions PDF Download

1. Where can I download the CBSE Class 12 Biology previous year question paper 2025?

You can easily download the CBSE Class 12 Biology Question Paper 2025 and previous year question papers from Vedantu’s website. We offer Class 12 Biology Question Paper 2025 PDF download for free, providing you with the most accurate and updated resources to enhance your exam preparation.

2. Are CBSE Class 12 Biology previous year paper 2025 available with solutions?

Yes, Vedantu provides CBSE Class 12 Biology Question Paper 2025 with answers PDF. Our solved papers offer detailed step-by-step solutions, allowing you to understand the correct answer format and marking scheme, which are crucial for Class 12 Biology 2025 question paper preparation.

3. Is the CBSE Class 12 Biology Question paper 2025 useful for board exam preparation?

Absolutely! Practicing the CBSE Class 12 Biology Question Paper 2025 is one of the most effective ways to prepare for the Class 12 Biology Board Exam. Previous year papers give you insight into the question format, topics frequently covered, and the marking distribution, which are all essential for effective exam preparation. They help you identify key areas to focus on and improve your time-management skills.

4. Do CBSE Class 12 Biology question papers 2025 follow the latest syllabus?

Yes, the Class 12 Biology question papers 2025 available on Vedantu follow the latest CBSE syllabus for 2025. Our biology class 12 2025 question paper collection is in line with the updated exam pattern, ensuring that you are practicing with the most relevant materials to prepare for your board exams.

5. Are CBSE Class 12 Biology question papers 2025 available set-wise?

Yes, CBSE Class 12 Biology Question Paper 2025 is available set-wise on Vedantu. We provide all sets of the biology class 12 question paper 2025, including sample papers and previous year question papers, so that you can practice effectively for different sections and increase your chances of scoring well in the exam.

7. How can practising CBSE Class 12 Biology previous year papers 2025 improve my performance?

By regularly solving the CBSE Class 12 Biology Question Paper 2025, you can enhance your understanding of important topics, boost your problem-solving skills, and improve your exam-taking strategies. Repeated practice with the Biology Class 12 2025 question paper will help you gain confidence and reduce exam stress.

9. Are solutions provided for the Class 12 Biology 2025 question papers?

Yes, all CBSE Class 12 Biology Question Paper 2025 PDF download resources on Vedantu come with detailed solutions. These solutions help you understand the step-by-step approach to solving each question, ensuring that you grasp the key concepts required for your exams.