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Biology covers the largest portion of NEET, carrying 90 questions out of 180 for a total of 360 marks, which means it alone accounts for 50% of the paper. These 90 questions are usually divided between Class 11 and Class 12, covering both Botany and Zoology. Hence, NEET Biology Chapter-wise Weightage 2026 is a key resource for aspirants who want to score high in the exam.
For the candidates' reference, below is the overview for the NEET exam 2026.
| Particulars | Details |
| Full exam name | National Eligibility cum Eligibility Test Undergraduate 2026 |
| Short exam name | NEET 2026 |
| Conducting body | National Testing Agency (NTA) |
| Official website | neet.nta.nic.in |
| Exam frequency | Once a year |
| Mode of exam | Offline (pen and paper-based) |
| NEET 2026 application form fee | Rs.1700 |
| Courses offered | MBBS, AYUSH, BDS, B.V.Sc |
| Minimum eligibility | 10 + 2 class pass out with Physics, Chemistry, and Biology |
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Because Biology contributes half of the exam, understanding the chapter-wise weightage helps students prepare more strategically. By focusing more time on high-weightage chapters like Genetics, Physiology, Ecology, and Biotechnology, aspirants can maximise their marks and improve their chances of securing a top rank in the NEET exam.
Biology is the most important subject in NEET 2026 because it covers half of the question paper and can significantly boost your overall score. The subject is generally considered easier to understand than physics and chemistry, especially if you understand the concepts well. Knowing the NEET Biology chapter-wise weightage 2026 it will help to score well and make a big difference in getting a good rank. Paying attention to the NEET Biology important questions to score 330+ marks and revising them regularly is the key to success.
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When it comes to NEET 2026 Biology chapter-wise distribution, chapters like cell structure, plant physiology, human physiology and biological classification from Class 11 are usually given more importance. These chapters form the base for many Class 12 concepts as well. The NEET Biology chapter weightage 2026 also suggests that the foundational topics from Class 11 are often tested directly or indirectly. The table below shows the NEET chapter-wise weightage for Class 11 Biology based on the past 5 year exam analysis.
| Chapter | 2021 | 2022 | 2023 | 2024 | 2025 | Weightage (%) |
| 4 | 1 | 3 | 5 | 3 | 9.47% | |
| 3 | 3 | 3 | 4 | 2 | 8.88% | |
| 1 | 2 | 2 | 2 | 1 | 4.73% | |
| 5 | 6 | 6 | 5 | 0 | 13.02% | |
| 3 | 3 | 2 | 4 | 3 | 8.88% | |
| 3 | 3 | 3 | 5 | 6 | 11.83% | |
| 5 | 4 | 5 | 2 | 3 | 11.24% | |
| 2 | 2 | 3 | 3 | 2 | 7.10% | |
| 2 | 2 | 0 | 2 | 1 | 4.14% | |
| 1 | 1 | 2 | 2 | 0 | 3.55% | |
| 5 | 4 | 4 | 6 | 6 | 14.79% | |
| 1 | 0 | 2 | 4 | 6 | 7.69% | |
| 0 | 3 | 3 | 1 | 6 | 7.69% | |
| 0 | 2 | 1 | 2 | 0 | 2.96% | |
| 0 | 0 | 2 | 2 | 1 | 2.96% |
The NEET 2026 Biology weightage for Class 12 highlights important chapters such as genetics and evolution, human health and disease, biotechnology and reproduction are often more commonly asked in exams. These chapters contain many direct concepts and definitions that are easier to remember and score. Focusing well on the NEET Biology 2026 important chapters helps in gaining better marks, as they are slightly more application-based. The table below shows the chapter-wise weightage for Class 12 Biology based on the previous years' analysis.
| Chapter | 2021 | 2022 | 2023 | 2024 | 2025 | Weightage (%) |
| 3 | 4 | 2 | 1 | 5 | 6.58% | |
| 8 | 6 | 5 | 7 | 4 | 13.16% | |
| 8 | 6 | 3 | 2 | 3 | 9.65% | |
| 4 | 3 | 4 | 2 | 2 | 6.58% | |
| 2 | 4 | 5 | 6 | 5 | 9.65% | |
| 3 | 2 | 2 | 4 | 1 | 5.26% | |
| 3 | 4 | 2 | 2 | 3 | 6.14% | |
| 3 | 4 | 3 | 4 | 7 | 9.21% | |
| 4 | 4 | 4 | 4 | 7 | 10.09% | |
| 11 | 9 | 7 | 6 | 7 | 17.54% | |
| 2 | 2 | 1 | 1 | 4 | 4.39% | |
| 4 | 2 | 2 | 2 | 0 | 4.39% |
In NEET Biology, certain chapters consistently appear to have higher weightage based on past exam patterns and analysis. Genetics and Evolution and Ecology, and Environment tend to be significant, with Genetics and Evolution potentially carrying the most weight. Other chapters, like Human Physiology, Plant Physiology, and Reproduction, also frequently have a larger number of questions.
In the NEET exam, Biology is generally considered an easier section compared to Physics and Chemistry, especially if you've thoroughly studied the NCERT textbooks. Most questions are based on these textbooks and require an understanding of concepts and memorising key terms, processes, and diagrams.
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.
On Question asked by student community
Hi there,
Apart from NEET and CUET you can explore the following career paths to
Students pursuing the PCB (Physics, Chemistry, Biology) stream can explore a wide range of options apart from CUET and NEET. Their choices are not just limited to medicine and can expand to include numerous areas
Hello,
The link to the papers is attached here. Solving previous year questions will help you understanding the important topics. You can also practice the sample papers and mock test papers of careers360 which will help you analyse your in-depth performance.
Thank you.
HELLO,
Below i am attaching the link through which you can download the NEET question paper in Hindi PDF
Here is the link :- https://medicine.careers360.com/hi/articles/neet-question-paper
Hope this will help you!
Hello Akanksha
It is possible to complete the syllabus within 4 months with discipline and clear plan. You need to be consistent everyday.
•In the first month you can complete
Units & measurement, motion in 1d and 2d, laws of motion, work power energy
Some basic concepts of chemistry, atomic
Hello,
The application process for NEET UG 2026 state quota seats in Karnataka, Gujarat, Maharashtra, and Puducherry is expected to begin in July 2026, after the NEET 2026 results are announced in June 2026. The exact dates are announced by each state's respective counselling authority.
I hope it will clear
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