Biology is important for NEET as it contributes to half of the maximum marks. Focusing on the high weightage chapters in Biology for NEET 2025 can boost the success chances of the aspirants. This will also help candidates to prioritise important areas and consider the best books for preparation. The Biology NEET Chapter wise Weightage PDF comprises an average number of questions and weightage percentage. Topics like the molecular basis of inheritance, plant kingdom, animal kingdom, etc are frequently asked. Read further for the NEET Biology Chapter wise Weightage 2025 and other details on this page.
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High Weightage Chapters in Biology for NEET 2025
The Biology NEET Chapter wise Weightage 2025 plays an important role in the exam preparation. The Biology section of NEET comprises two parts i.e. Botany and Zoology. The NEET exam carries 180 questions with 90 questions from Biology which is 50% of the total marks. Hence, biology is a scoring subject but candidates must create a well planned strategy and focus on high-weightage chapters for better outcomes. Familiarity with the most weightage chapters for NEET Biology will help them cover the syllabus efficiently. We have compiled below the high weightage chapters in Biology for NEET 2025 PDF for the ease of the NEET aspirants.
Important Topics in Biology for NEET 2025
The NEET Biology section is divided into 10 units such as Diversity in Living World, Structural Organisation in Animals and Plants, Cell Structure and Function, etc. Mastering concepts across all the units can improve their overall scores. Here is the breakdown of the biology syllabus for NEET 2025 shared below:
NEET 2025 Biology Syllabus
| Unit | Important Topics |
| Diversity in Living World | What is living?Five kingdom classificationSalient features and classification of plants into major groupsSalient features and classification of animals, etc |
| Structural Organisation in Animals and Plants | Morphology and modifications; TissuesAnimal tissues, etc |
| Cell Structure and Function | Cell theory and cell as the basic unit of lifeChemical constituents of living cells, etcB Cell division, etc |
| Plant Physiology | PhotosynthesisRespirationPlant growth and development, etc |
| Human Physiology | Breathing and RespirationBody fluids and circulationExcretory products and their eliminationLocomotion and MovementNeural control and coordinationChemical coordination and regulation, etc |
| Reproduction | Sexual reproduction in flowering plantsHuman Reproduction: Male and female reproductive systemsReproductive health: Need for reproductive health and prevention of sexually transmitted diseases (STD), etc |
| Genetics and Evolution | Heredity and variationMolecular basis of InheritanceEvolution: Origin of life, etc |
| Biology and Human Welfare | Health and DiseaseMicrobes in Human Welfare, etc |
| Biotechnology and Its Applications | Principles and Process of BiotechnologyApplication of Biotechnology in health and agriculture, etc |
| Ecology and Environment | Organisms and environment Population interactionsEcosystemBiodiversity and its conservation, etc |
High Weightage Chapters in Biology for NEET 2025
The high weightage chapters in biology for NEET 2025 free comprise a number of questions and weightage of past years. There is a wide range of topics included in the Biology syllabus for NEET 2025. However, certain topics carry a higher weight and can be asked in the upcoming exam exam. The breakdown of the NEET Biology Chapter wise Weightage for Botany and Zoology is discussed below.
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NEET Biology Chapter wise Weightage for Botany
Familiarity with the NEET Biology Chapter Wise Weightage for Botany is crucial. This helps aspirants to emphasise important topics and boost their preparation. Let’s discuss the high weightage chapters in Biology for NEET 2025 Botany below:
NEET Chapter Wise Weightage 2025 for Botany
| Chapter | Average Number of Questions Based on 5-year Analysis | Weightage of Each Chapter |
| Molecular Basis of Inheritance | 6 | 14% |
| Principles of Inheritance and Variations | 5 | 10% |
| Cell Cycle of Cell Division | 4 | 9% |
| Anatomy of Flowering Plants | 3 | 7% |
| Plant Kingdom | 3 | 7% |
| Sexual Reproduction in Flowering Plants | 3 | 6% |
| Morphology of Flowering Plants | 3 | 6% |
| Plant Growth and Development | 3 | 6% |
| Cell: The Unit of Life | 2 | 5% |
NEET Biology Chapter wise Weightage for Zoology
Aspirants must check the NEET Biology Chapter Wise Weightage for Zoology before planning the strategy. It will allow them to solidify their concepts and improve success chances. Let’s discuss the high weightage chapters in Biology for NEET 2025 Zoology below:
NEET Chapter Wise Weightage 2025 for Zoology
| Chapter | Average Number of Questions Based on 5-year Analysis | Weightage of Each Chapter |
| Animal Kingdom | 7 | 13% |
| Biotechnology-Principles & Process | 6 | 12% |
| Biomolecules | 5 | 10% |
| Structural Organisation in Animals | 4 | 8% |
| Reproductive Health | 4 | 8% |
| Biotechnology and its application | 4 | 7% |
| Locomotion and Movement | 3 | 6% |
| Evolution | 3 | 6% |
| Human Reproduction | 3 | 6% |
| Human Health and Disease | 3 | 6% |
How to Cover High Weightage Chapters in Biology for NEET 2025?
Biology is one of the highest-scoring subjects in NEET 2025. Thus, aspirants must build an effective approach to cover the entire syllabus comprehensively. Let’s discuss the tips and tricks to cover high weightage chapters in Biology for NEET 2025 below:
- Build a solid foundation of all the topics prescribed in the biology syllabus for NEET 2025
- Focus on all chapters that carry maximum weightage to achieve high scores.
- Practice questions from NEET previous year papers to understand the actual format and predict expected questions.
- Attempt NEET mock tests and question banks regularly to improve time management and question-solving speed.
- Regular revision is crucial to retain the vast NEET syllabus of Biology. Utilise diagrams and flowcharts to understand complex topics and quicker revision.
High Weightage Chapters in Biology for NEET 2025 – FAQs
Some of the important NEET biology topics are Diversity in Living World, Structural Organisation in Animals and Plants, Cell Structure and Function, etc.
NEET Biology topics like the molecular basis of inheritance, plant kingdom, animal kingdom, biotechnology etc carry maximum weight.
A total of 90 questions were asked in the NEET Biology section.
Aspirants must solve unlimited questions from mock tests and previous year’s papers to cover NEET Biology chapter wise weightage.