According to experts and the latest NEET 2026 syllabus discussion, around 5-7% of the NEET Biology Syllabus 2026 has been deleted. This is due to several topics from Class 11 and Class 12 NCERT being removed or modified as per the National Education Policy 2020.
- As per Vidya NEET Adda247 Video, the deleted syllabus of NEET 2026 Biology include topics, Taxonomic Aids, Mineral Nutrition, Secondary Growth, Digestion and Absorption, Reproduction in Organisms, Environmental Issues, and Ecological Succession.
- Some of the topics are completely removed, while others have been updated as per the new NCERT editions.
- The official NEET 2026 syllabus PDF has been published by the National Testing Agency (NTA) but students are advised to refer to both the old and new NCERT for certain Biology topics.
This article provides a complete list of reduced class-wise NEET Biology topics and chapter-wise weightage of Biology.
Related Links:
- NEET Biology Question Papers with solution PDFs
- NEET Biology Preparation Tips: Chapter-Wise Tips, Study Notes & Books
Deleted Syllabus of NEET 2026 Biology Live Updates: 14th March, 2026
- Around 15-16 topics/subtopics were removed from the Biology syllabus.
- Class 11 Biology: 10 topics removed, mainly from Plant Physiology and Taxonomy.
- Class 12 Biology: 5-6 topics deleted, mostly from Ecology and Applied Biology.
- The total reduction is approximately 5-7% of the Biology syllabus.
| Class | Topics Deleted | Share of Biology Syllabus | Approx. % Removed |
|---|---|---|---|
| Class 11 | 10 | 45-50% | 6-7% |
| Class 12 | 5-6 | 50-55% | 3-4% |
| Total | 15-16 | 100% | 9-11% |
Even though some chapters are removed, linked concepts may still appear in questions, so students should maintain basic conceptual understanding.
Deleted Syllabus of NEET 2026 Biology: Class-Wise Syllabus Reduction
Deleted Syllabus of NEET 2026 Biology: Class 11
- Several topics from Class 11 Biology, particularly from Plant Physiology and structural chapters, have been removed from the syllabus.
- These topics are either not present in the new NCERT books or are officially removed from the NEET syllabus.
Major Deleted Topics (Class 11)
| Chapter | Deleted Topic |
|---|---|
| The Living World | Taxonomic Aids |
| Plant Kingdom | Angiosperm classification details |
| Structural Organisation in Animals | Earthworm description |
| Anatomy of Flowering Plants | Secondary Growth |
| Plant Physiology | Mineral Nutrition (entire chapter removed) |
| Transport in Plants | Advanced transport mechanisms |
| Plant Growth and Development | Vernalization |
| Human Physiology | Digestion and Absorption (major portion removed) |
| Neural Control and Coordination | Reflex arc and reflex action |
| Sense Organs | Eye and Ear sections |
Although these topics are removed, students should still understand basic related concepts, as Biology chapters are often interconnected.
Source: Anmol Sharma Biology YouTube
Check:
Deleted Syllabus of NEET 2026 Biology: Class 12
- The deleted syllabus of NEET 2026 Biology in Class 12 mainly affects reproduction, ecology, and applied biology chapters.
- Some chapters have been fully removed, while certain concepts have been shifted to other chapters in the new NCERT books.
Major Deleted Topics (Class 12)
| Chapter | Deleted Portion |
|---|---|
| Reproduction in Organisms | Entire chapter removed |
| Strategies for Enhancement in Food Production | Entire chapter removed |
| Ecosystem | Ecological Succession |
| Ecosystem | Nutrient Cycling |
| Ecosystem | Ecosystem Services |
| Environmental Issues | Entire chapter removed |
| Biotechnology and Its Applications | Ethical issues like biopiracy and biopatent |
However, some important biotechnology topics such as plant tissue culture, micropropagation, and somatic hybridization have been shifted to Biotechnology Applications in the new NCERT.
Source: Anmol Sharma Biology YouTube
Ques. Has the NEET 2026 Biology syllabus been reduced?
Ans. Yes, a small portion of the Biology syllabus has been reduced in recent updates, mainly from plant physiology, ecology, and applied biology topics. The aim is to make the syllabus more focused on core NCERT concepts.
Ques. Which class saw more syllabus reduction in NEET Biology?
Ans. Both Class 11 and Class 12 saw similar reductions, with about 3-4% removed from each class. The changes mainly affected a few plant and ecology chapters.
Topics You Should Study from Old NCERT for NEET 2026
Some topics that are relevant for NEET preparation are not present in either the old or the new NCERT textbooks. These concepts are usually taken from additional educational resources.
| Topic | Description |
|---|---|
| Dengue | Viral disease and transmission |
| Chikungunya | Mosquito-borne infection |
| Plant Families | Classification of plant families |
Source: Youtube
These topics are sometimes included in reference books or supplementary biology materials, so students should not ignore them completely.
Read More: How many chapters are in NEET Biology 2026?
Ques. Will questions be asked from the Deleted Syllabus of NEET 2026 Biology topics?
Ans. No, questions are generally not asked directly from officially deleted topics. However, related concepts from the remaining syllabus may still appear.
Ques. Is NCERT still enough for NEET Biology preparation?
Ans. Yes, NCERT remains the most important resource, as most NEET Biology questions are directly based on NCERT concepts. Students should study NCERT line-by-line and practice MCQs regularly.
Which NCERT Should You Follow for NEET 2026 Biology?
- The new NCERT textbooks should be the primary source for NEET 2026 preparation because the updated syllabus is largely based on them.
- However, certain topics that are missing in the new NCERT but still included in the NEET syllabus may require reference from the old NCERT books.
| Study Source | Usage |
|---|---|
| New NCERT | Primary source for NEET preparation |
| Old NCERT | For topics removed from new books but still in syllabus |
| Reference Books | For additional or out-of-NCERT topics |
Source: YouTube
Also Read: Download NEET Syllabus PDF With Chapter-Wise Weightage
Out-of-NCERT Topics in NEET Biology
- The NEET 2026 Biology Syllabus usually follows the NCERT Biology textbooks, but there are some topics that are not included in the NCERT but are mentioned in the NEET Biology Syllabus.
- So it is advised that students should first give importance to the NCERT line-by-line study, and once that is completed, they can cover these out-of-NCERT topics for additional preparation.
| Chapter Name | Topics | Source |
|---|---|---|
| The Living World | What is Living? | Old NCERT |
| Morphology of Flowering Plants | Families - Malvaceae, Cruciferae, Leguminosae, Compositae, Gramineae | YouTube / Google |
| Morphology of Flowering Plants | Practical Syllabus | PDF / Study Material |
| Structural Organisation in Animals | Insect - Cockroach | Old NCERT |
| Locomotion and Movement | Practical Syllabus | PDF / Study Material |
| Human Health and Disease | Dengue, Chikungunya | CBSE Supplementary Material |
| Biodiversity and Conservation | Red Data Book | Google / Reference Sources |
Check this video for NEET Biology Syllabus of NEET 2026 and Out of NCERT Topics
Check:
| NEET 2024 BIOLOGY PYQ | NEET 2023 BIOLOGY PYQ | NEET 2022 BIOLOGY PYQ |
| NEET 2026 Biology Chapter-Wise Mock Test | ||
Ques. What are out-of-NCERT topics in NEET Biology?
Ans.Out-of-NCERT topics are concepts mentioned in the NEET syllabus but not clearly covered in the current NCERT textbooks. Students may need to study them from other sources.
Ques. Are out-of-NCERT topics important for NEET?
Ans. Yes, but their weightage is usually low. Most NEET Biology questions are still asked directly from NCERT textbooks.
Ques. How many out-of-NCERT topics are there in NEET Biology?
Ans. There are only a few topics, such as Cockroach, Dengue, Chikungunya, Red Data Book, and some plant families that fall under out-of-NCERT content.
Should You Completely Skip the Deleted Syllabus of NEET 2026 Biology Topics?
Since these topics are officially removed from the syllabus, direct questions from them may not appear in the NEET 2026 exam.
However, some concepts will still help you to understand the related chapters. So candidates should focus mainly on the official syllabus, but should have a basic understanding of the deleted topic.
Preparation Tips for NEET Biology 2026
- Focus primarily on the NCERT line-by-line study
- Practice NCERT-based MCQs
- Cover out-of-NCERT topics mentioned in the official syllabus
- Prioritise high-weightage chapters
With the right strategy and consistent revision, students can maximise their Biology score in NEET 2026.
Check:
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Ques. Should I completely skip the deleted NEET 2026 Biology topics?
Ans. Yes, you can skip them for exam preparation since they are officially removed from the NEET syllabus. Focus more on the topics that are currently included.
Ques. Will questions be asked from deleted NEET Biology topics?
Ans. No, questions are generally not asked directly from deleted topics. NEET questions are based on the official syllabus released by NMC/NTA.
Ques. Is it useful to know the basics of deleted chapters?
Ans. Yes, having a basic idea can sometimes help in understanding related concepts, especially in plant physiology and ecology.
Deleted Syllabus of NEET 2026 Biology: Reddit Discussion
One Reddit user posted a query asking whether they should study topics that are not included in the new NCERT but still appear in NEET questions or the syllabus.
“I came across some questions from topics like runners, stolon, and certain plant families that are not in the new NCERT 2025-26. But they still appear in the NEET syllabus. Should we study them or follow only NCERT?”
Source: Reddit
Several Reddit users responded with advice based on their preparation experience.
- One user suggested strictly following the official NEET syllabus released by NMC/NTA, even if the topics are missing from the new NCERT.
- Another user pointed out that some topics may still be part of the NEET syllabus but not present in the latest NCERT books.
Updated NEET Biology Syllabus 2026: Chapter-Wise Weightage
- The NEET 2026 Biology syllabus is divided into Class 11 and Class 12 NCERT topics, with each contributing almost equal weightage in the exam.
- Generally, Class 11 Biology contributes around 45-50%, while Class 12 Biology contributes about 50-55% of the Biology questions.
NEET Biology Class 11 Weightage
| Unit / Topic | Approx. Weightage |
|---|---|
| Diversity of Living Organisms | 14% |
| Structural Organisation in Animals and Plants | 5% |
| Cell Structure and Function | 9% |
| Plant Physiology | 6% |
| Human Physiology | 20% |
Class 11 Biology focuses more on Human Physiology and Diversity of Living Organisms, which together contribute a significant portion of questions in NEET.
NEET Biology Class 12 Weightage
| Unit / Topic | Approx. Weightage |
|---|---|
| Reproduction | 9% |
| Genetics and Evolution | 18% |
| Biology and Human Welfare | 9% |
| Biotechnology and Its Applications | 4% |
| Ecology and Environment | 6% |
Among Class 12 topics, Genetics and Evolution generally carry the highest weightage and are considered one of the most important units for NEET Biology preparation.
Check: Chapter-wise high-weightage chapters for NEET 2026 Biology
Deleted Syllabus of NEET 2026 Biology FAQs
Ques. Will Biology be removed from NEET 2026?
Ans. No. Biology is the core of the NEET exam.
- Biology alone carries 50% weightage (180 marks out of 360).
- Without Biology your admission to MBBS, BDS and all medical courses is impossible.
- So, there is no chance of Biology being removed from NEET.
Ques. How many Biology chapters are there in NEET 2026?
Ans. There are almost 10 units in Class 11 and 5 units in Class 12 that make up your 38 chapters in total.
- Class 11: Diversity of Living Organisms, Structural Organisation, Cell Biology, Plant Physiology, Human Physiology.
- Class 12: Reproduction, Genetics & Evolution, Biology in Human Welfare, Biotechnology, Ecology.
Ques. Has the syllabus changed for NEET 2026?
Ans. As of today, there are no official changes that have been announced in your NEET 2026 Biology syllabus.
- The last update was for NEET 2025, where around 5-7% of Biology syllabus was deleted (mostly descriptive and overlapping topics).
- Until NTA releases the official 2026 PDF you should follow the 2025 revised syllabus.
Ques. Which stream is best for Biology?
Ans. The Science stream (PCB: Physics, Chemistry, Biology) in class 11 is best for aspirants of NEET exam.
- Biology is mandatory for you to pursure medicine, dentistry, pharmacy, paramedical sciences, biotechnology and life sciences research.
- Students with PCB can only appear for NEET (not PCM).
Ques. What is the correct way to study Biology?
Ans. You should follow this:
- Start with NCERT Biology because almost all NEET Biology questions are NCERT-based.
- Make short notes and diagrams for quick revisions.
- Use flowcharts, tables and mnemonics for cycles, processes and classifications.
- Revise regularly and test yourself with NCERT-based MCQs and PYQs.
Ques. How to score high in Biology NEET?
Ans. You can follow this:
- Prioritise Class 11 Human Physiology and Class 12 Genetics, Ecology and Human Reproduction because they carry the highest weightage.
- Practice mock tests, PYQs and NCERT-based test series daily.
- Focus on concept clarity + diagram-based learning instead of rote learning.
- Revise NCERT line by line, especially highlighted sections and diagrams.
- Be consistent with 2-3 hours daily Biology study.
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