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High Weightage Biology Chapters for NEET 2026 Exam

High Weightage Biology Chapters for NEET 2026 Exam

#NEET
Irshad AnwarUpdated on 29 Nov 2025, 11:32 AM IST

Biology has the highest weightage in the NEET exam. The subject is further divided into Botany and Zoology sections. To qualify for the NEET exam, candidates must know the syllabus and high weightage chapters for NEET 2026 Biology. Having an understanding of the weightage helps students to prioritise the chapters that are frequently asked in exams. This also saves time and improves overall preparation efficiency.

This Story also Contains

  1. Importance of High Weightage Chapters for NEET 2026 Biology
  2. Chapter Wise Weightage for Biology NEET 2026: Previous Trends (2020-2025)
  3. NEET Biology Weightage 2026: Detailed Analysis of Units
  4. How to Use NEET Biology Weightage 2026 in Study Plan?
High Weightage Biology Chapters for NEET 2026 Exam
High Weightage Biology Chapters for NEET 2026

The NTA does not release any official weightage, but the analysis is based on the NEET previous question papers. There are 180 questions in the NEET exam, out of which 90 are from Biology. NEET 2026 Biology important chapters include the plant kingdom, principles of inheritance and variation, biotechnology and its applications, etc. Topics such as classification of the plant kingdom, Mendel’s law, rDNA technology, etc., are commonly tested. Focusing on these chapters helps aspirants to prepare an effective NEET study plan.

Importance of High Weightage Chapters for NEET 2026 Biology

Preparing for the NEET exam requires a strategic approach and a well-structured plan. The NEET biology syllabus 2026 is very vast, and time is limited. Therefore, it is important to know where to focus first. Some chapters carry higher weightage than others. Given below are a few points that highlight why it is necessary to know the NEET 2026 Biology important chapters.

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Chapter Wise Weightage for Biology NEET 2026: Previous Trends (2020-2025)

The Biology subject carries 50% weightage in the NEET exam, making it the most important. Analysing the previous year's questions helps students understand the NEET exam pattern 2026. The table below shows the chapter wise weightage for biology NEET 2026. Students can aim for the scoring chapters first to score 700 marks in the NEET exam.

The data is from the past 5 years, and these chapters transport in plants, strategies for enhancement in food production, digestion and absorption and mineral nutrition are not a part of the syllabus now.

Chapters20212022202320242025

Weightage (%)

Ecosystem342153.30%
Morphology of Flowering Plants413533.52%
Biotechnology: Principles & Processes865746.60%
Anatomy of Flowering Plants333423.30%
Plant Growth and Development122211.76%
Sexual Reproduction in Flowering Plants863234.84%
Cell Cycle and Cell Division566504.84%
Cell: The Unit of Life332433.30%
Organisms & Populations434223.30%
Principles of Inheritance & Variation245654.84%
Evolution322412.64%
Biotechnology & Its Application342233.08%
Biomolecules333564.40%
Human Reproduction343474.62%
Human Health and Disease444475.06%
Molecular Basis of Inheritance1197678.79%
Structural Organisation in Animals545234.18%
Transport in Plants113001.10%
Photosynthesis in Higher Plants223322.64%
Biological Classification220211.54%
Strategies for Enhancement in Food Production131001.10%
Microbes in Human Welfare221142.20%
Respiration in Plants112201.32%
Animal Kingdom544665.49%
Reproductive Health422202.20%
Digestion and Absorption322001.54%
Chemical Coordination and Integration102462.86%
Breathing and Exchange of Gases331201.98%
Environmental Issues114001.32%
Locomotion and Movement132201.76%
Plant Kingdom033162.86%
Reproduction in Organisms010000.22%
Body Fluids & Circulation021201.10%
Biodiversity and Conservation002521.98%
Mineral Nutrition002000.44%
Neural Control and Coordination002100.66%
Excretory Products and Elimination002211.10%

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NEET Biology Weightage 2026: Detailed Analysis of Units

Both theory and diagram-based questions are included in the biology section. Some chapters consistently contribute more questions to the NEET biology question paper. Practising these topics can improve accuracy and speed. Given below is a detailed analysis of high scoring chapters in Biology for NEET 2026.

Class 11, Unit 1: Diversity in the Living World

  • Focus should be on the phylum Chordata, and mainly on humans and mammals.
  • Characteristic features of different groups are commonly asked in the NEET exam.
  • Examples of each group and their unique characteristics should be studied to score well in the NEET 2026.
  • Plant physiology topics like photosynthesis and respiration are NEET 2026 Biology important chapters.
  • Diagram-based questions are common, such as the structure of stomata and parts of a flower.
  • Candidates should focus on the economic importance of plants and their uses.

Class 11, Unit 5: Human Physiology

  • Questions are asked about the circulatory system and the human digestive system. These are among the high scoring chapters in Biology for NEET 2026.

  • More application-based questions are included rather than the direct theory.

  • Diagrams of organs, their systems, and related processes are important.

Class 12, Unit 7: Genetics and Evolution

  • More importance should be given to Mendel’s laws and the molecular basis of inheritance.

  • Questions from evolution are based on the theories, such as Darwin’s theory of natural selection.

  • Students also have to practice the pedigree analysis, as questions are asked to test problem-solving skills.

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How to Use NEET Biology Weightage 2026 in Study Plan?

Clearing the exam becomes easier with an effective study plan. Many students get confused about which topics need more time and which to revise later. Given below are a few tips that aspirants can use the NEET Biology weightage 2026 in their timetable. With proper planning and time management, students can also prepare for NEET at home.

  • Students should go through the syllabus and mark the NEET 2026 Biology important chapters.

  • Next, they can start with the chapters that carry high weightage from the NCERT books for NEET 2026.

  • More hours should be allocated by the candidates to study high weightage chapters for NEET 2026 biology.

  • Important NEET biology diagrams should be practised based on frequently asked topics.

  • Attempting NEET Biology mock tests with a focus on weightage helps candidates test their accuracy and speed.

NEET Syllabus: Subjects & Chapters
Select your preferred subject to view the chapters

Frequently Asked Questions (FAQs)

Q: Which chapter has the highest weightage in Biology for NEET?
A:

The chapters with the highest weightage in Biology for NEET are Molecular Basis of Inheritance, Animal Kingdom, and Human Health and Disease.

Q: What is the weightage of NEET 2026 for Biology?
A:

In NEET 2026, Biology holds the highest weightage with 90 out of 180 questions (360 marks), making up 50% of the paper.

Q: Which is the toughest chapter in NEET Biology?
A:

Principles of inheritance and variation, and molecular basis of inheritance are considered the toughest chapters of NEET biology.

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