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The NEET Biology chapter-wise weightage 2027 assists candidates in knowing the most frequently asked chapters and topics in the NEET question paper in previous years. Biology has a total weightage of 360 marks out of 720 marks in the NEET examination. Therefore, Biology is a crucial subject as far as scoring higher in the NEET exam is concerned. The analysis of previous-year question papers will allow students to prioritise important chapters, prepare a study timetable and revise the topics which appear often in the Class 11 and Class 12 Biology question papers.
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This article explains in detail NEET Biology chapter-wise weightage 2027 based on previous NEET question papers from 2021 to 2026. It explains NEET chapter-wise weightage for Class 11 and Class 12 Biology and includes topics which are asked frequently in the NEET question papers. Along with this weightage analysis, the candidates can refer to the NEET syllabus, NCERT Biology books, NEET important questions, and previous-year NEET questions to prepare effectively for the NEET Biology exam.
As far as the chapter-wise weightage in NEET 2027 Biology is concerned, topics such as cell structure, plant physiology, human physiology, and biological classification from Class 11 have become an important source of NEET exam questions. Moreover, these topics form the base of many topics of Class 12 too. According to the NEET Biology chapter weightage 2027, the core topics of Class 11 have become part of important NEET questions. This table presents NEET chapter-wise weightage for Class 11 Biology from last year's exam analysis.
Chapter | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
4 | 1 | 3 | 5 | 3 | 4 | |
3 | 3 | 3 | 4 | 2 | 0 | |
1 | 2 | 2 | 2 | 1 | 4 | |
5 | 6 | 6 | 5 | 0 | 3 | |
3 | 3 | 2 | 4 | 3 | 8 | |
3 | 3 | 3 | 5 | 6 | 2 | |
5 | 4 | 5 | 2 | 3 | 1 | |
2 | 2 | 3 | 3 | 2 | 5 | |
2 | 2 | 0 | 2 | 1 | 3 | |
1 | 1 | 2 | 2 | 0 | 1 | |
5 | 4 | 4 | 6 | 6 | 4 | |
1 | 0 | 2 | 4 | 6 | 3 | |
0 | 3 | 3 | 1 | 6 | 2 | |
0 | 2 | 1 | 2 | 0 | 4 | |
0 | 0 | 2 | 2 | 1 | 1 |
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NEET 2027 Biology Chapter Wise Weightage for Class 12 brings into light very significant chapters like Genetics & Evolution, Human Health & Diseases, Biotechnology & Reproduction, which usually comprise the questions that are most frequently asked biology concepts. They have several direct concepts and definitions, which are relatively easy to understand and score. Proper attention to NEET do or die Biology chapters will result in better scoring since they are relatively more application-oriented. The following is the chapter-wise weightage table for Class 12 Biology according to the previous years' paper analysis.
Chapter | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
3 | 4 | 2 | 1 | 5 | 2 | |
8 | 6 | 5 | 7 | 4 | 4 | |
8 | 6 | 3 | 2 | 3 | 3 | |
4 | 3 | 4 | 2 | 2 | 3 | |
2 | 4 | 5 | 6 | 5 | 3 | |
3 | 2 | 2 | 4 | 1 | 6 | |
3 | 4 | 2 | 2 | 3 | 1 | |
3 | 4 | 3 | 4 | 7 | 5 | |
4 | 4 | 4 | 4 | 7 | 5 | |
11 | 9 | 7 | 6 | 7 | 2 | |
2 | 2 | 1 | 1 | 4 | 1 | |
4 | 2 | 2 | 2 | 0 | 1 |
A six-year study of NEET Biology question papers has come up with chapters which have remained constant in importance and those which have seen changes in the form of question frequency.
The chapter Cell: The Unit of Life had an increase in 2026, with 8 questions coming in the analysis.
Biotechnology: Principles and Processes has always been an important chapter.
Molecular Basis of Inheritance saw many questions before but not in 2026.
Human Health and Disease & Human Reproduction have been important Class 12 chapters.
Biology is the major subject in NEET 2027 as it constitutes half of the question paper and can add greatly to your overall marks. It is relatively easy compared to physics and chemistry, provided that you know the concepts thoroughly. Knowing the NEET Biology chapter wise weightage 2027 can greatly improve your chances to secure high ranks in the exam. Concentrating on NEET Biology important questions for 330+ marks is a sure-shot way to succeed.
In order to get more marks in NEET 2027 Biology, you should concentrate on the important biology chapters which have more weightage in Biology. These topics include Human Physiology, Genetics & Evolution, Ecology & Environment, Plant Physiology & Diversity, and Reproduction (Plant & Human).
Chapter | Important Topics | Preparation Tips |
Human Physiology | Digestion, Respiration, Circulation, Excretion, Nervous System, Endocrine Glands | Revise NCERT diagrams and flowcharts. Solve Human Physiology PYQs. |
Genetics and Evolution | Inheritance, Molecular Genetics, DNA Replication, Genetic Disorders, Evolution | Practise genetics numericals and pedigree questions. Solve chapter-wise PYQs. |
Ecology and Environment | Ecosystem, Biodiversity, Environmental Issues, Organisms and Populations | Read NCERT thoroughly. Revise key terms and solve PYQs regularly. |
Plant Physiology & Plant Diversity | Photosynthesis, Respiration, Plant Growth, Plant Kingdom, Morphology, Anatomy, Cell Biology | Revise NCERT diagrams, tables, and important concepts. Practise PYQs. |
Reproduction (Plant & Human) | Human Reproduction, Reproductive Health, Sexual Reproduction in Flowering Plants | Learn NCERT diagrams and important processes. Solve previous years' questions. |
Biology can prove to be an easy-scoring subject in case the students have good knowledge about NCERT topics, diagrams, terminologies, and facts. But the level of difficulty may differ from one paper to another.
Frequently Asked Questions (FAQs)
There will be a total of 90 questions asked from the Biology section of NEET. The total marks for the Biology section is 360 marks.
The NTA (National Testing Agency) releases the official NEET syllabus and weightage details on its website (neet.nta.nic.in). Various educational platforms also provide chapter-wise weightage PDFs.
Chapters like Human Physiology, Genetics & Evolution, Ecology, and Biotechnology have the highest weightage in NEET Biology. These topics require extra focus during preparation.
Focus on high-weightage topics first. Revise NCERT thoroughly, practice previous years' papers, and take mock tests to strengthen weak areas and maximise scores.
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