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Do or Die Chapters in Biology for NEET are those high-weightage topics which an aspirant must concentrate on while preparing for NEET 2027. Biology carries 360 marks in the NEET exam; hence, it is the subject carrying the maximum marks. Though all topics are equally important, chapter-wise analysis of past years' question papers reveals that certain chapters of Biology hold higher importance and often feature in the examination.
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This article includes Do or Die Chapters in Biology for NEET 2027, based on chapter-wise weightage analysis, past years' question papers, and NCERT topics. You will also learn about the weightage expected from them, important topics, NEET important questions based on NCERT, revision tips and quick tips to prepare for the Do or Die Topics in Biology for NEET.
NEET 2027 aspirants wish to find out the do-or-die chapters of Biology. These are the NEET highest weightage chapters in biology and are most frequently asked in the exam. By studying these key Biology chapters for NEET 2027, candidates can attempt most questions in less time. Experts and toppers advise that it is the best idea to practise 100 most important NEET Biology questionsto get 330+ marks.
Here are the most important Biology chapters for NEET 2027 based on previous year papers analysis that should be on every student’s priority list:
NCERT Biology Class 11 | NCERT Biology Class 12 |
The Living World | Sexual Reproduction In Flowering Plants |
Plant Kingdom | Human Reproduction |
Morphology of Flowering Plants | Reproductive Health |
Structural Organisation in Animals | Principles of Inheritance and Variation |
Cell: The Unit of Life | Molecular Basis of Inheritance |
Transport in Plants | Evolution |
Photosynthesis in Higher Plants | Human Health and Disease |
Plant Growth and Development | Microbes in Human Welfare |
Body Fluids and Circulation | Biotechnology: Principles and Processes |
Locomotion and Movement | Biotechnology and its Applications |
Chemical Coordination and Integration | Organisms and Populations |
Biological Classification | Ecosystem |
Animal Kingdom | Biodiversity and Conservation |
Anatomy of Flowering Plants | |
Biomolecules | |
Cell Cycle and Cell Division | |
Respiration in Plants | |
Breathing and Exchange of Gases | |
Excretory Products and Their Elimination | |
Neural Control and Coordination |
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The table below shows the NEET biology chapter-wise weightage based on the previous year's analysis:
The data is from the past 5 years, and the chapters transport in plants, strategies for enhancement in food production, digestion and absorption, reproduction in organisms and mineral nutrition are not a part of the syllabus now.
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 |
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 |
Knowing the do-or-die chapters in Biology for NEET 2027 is only the first step. The next step is preparing them smartly. Since Biology covers 90 questions in NEET, even a correct answer can improve your rank. Here is the best way to prepare for the most scoring concepts in biology for NEET 2027.
Every question in NEET Biology is based on the NCERT. Read every line of the NCERT textbooks for Class 11 and 12. Highlight diagrams, flowcharts, and definitions.
Learn the concepts behind the most important biology diagram to increase conceptual understanding.
Pay extra attention to chapters like Human Physiology, Genetics, and Ecology, as many direct questions are framed from the NCERT.
Solve at least the last 10 years of NEET PYQs. Many questions repeat with slight variations, especially in Genetics, Ecology, and Human Physiology.
Practising the NEET question paper shows you the exact type of questions asked from these do-or-die Biology chapters.
Prepare short notes for every high-weightage chapter.
Use flowcharts for processes like photosynthesis, respiration, DNA replication, and hormonal coordination.
Keep these notes handy for preparation before NEET 2027.
Schedule a weekly revision plan for the top 5 units - human physiology, genetics, ecology, diversity, and reproduction.
Also, include high-scoring chapters that cover 60% of the NEET paper in your revision strategy plan
Regular revision prevents forgetting and improves accuracy during the exam.
After finishing each chapter, attempt topic-wise NEET mock tests. Then move to a full-length Biology mock test under timed conditions.
This helps identify weak areas within the important Biology chapters for NEET 2027 and builds exam stamina.
Knowing the do-or-die chapters in Biology for NEET 2027 is only the first step. The next step is preparing them smartly. Since Biology covers 90 questions in NEET, even a correct answer can improve your rank. Here is the best way to prepare for the most scoring concepts in biology for NEET 2027.
Schedule weekly revision sessions for the top 5 chapters – human physiology, genetics, ecology, diversity and reproduction.
Along with this, add high scoring chapters that will cover 60% of NEET paper in your revision strategy plan
Revision is the key for remembering all facts and for improving accuracy while writing exams.
Once you finish the topic, take chapter wise NEET mock tests followed by full length Biology mock tests under time bound conditions.
This will help you figure out your weaknesses in Biology chapters for NEET 2027.
Frequently Asked Questions (FAQs)
The Do or Die chapters include Human Physiology, Genetics and Evolution, Ecology, Reproduction, Cell Biology, Plant Physiology, Biotechnology, and Diversity of Living World. These are the most important Biology topics for NEET 2027.
Nearly 50-55 out of 90 Biology questions are expected from these chapters, making them decisive for rank improvement.
It is not advisable to skip them completely. While Do or Die chapters should be prioritised, low‑weightage chapters can still add 10–15 marks, which may be crucial for your final rank.
On Question asked by student community
Hello Student, for NEET-UG , you need to have passed Class 12 or an equivalent examination with the required subjects, including Physics, Chemistry, Biology/Biotechnology and English. For the qualifying examination, the required PCB percentage is generally 50% for General category candidates, 40% for SC/ST/OBC-NCL candidates and 45% for PwBD candidates
Hello Student, agar aapne counselling ke liye registration kar liya hai lekin Round 1 mein choice filling nahi karte, toh generally aapko Round 1 mein seat allotment nahi milega because aapne apni preferences submit nahi ki hain. However, later rounds mein participate karne ka option counselling ke specific rules par
Hi Aditi,
Please refer to this article link : https://medicine.careers360.com/articles/neet-question-paper
It contains NEET previous years' question papers for the last 10 years, compiled in a single place.
Dear Student,
If grace marks have been given in your NEET result, admission eligibility depends on your final valid NEET score, rank and the applicable counselling rules. For BDS admission, you must fulfil the NEET qualifying criteria and participate in counselling. Check the latest BDS Cutoff for NEET 2026
Hello, grace marks in NEET do not determine eligibility for BDS admission. For BDS admission, candidates need to meet the NEET qualifying criteria and the required Class 12 subjects and marks. The eligibility criteria may also vary based on the candidate's category. You can check the detailed BDS eligibility criteria
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