Biology Syllabus

NEET 2026 Biology Syllabus: Download PDF, Reductions, Exam Pattern, and Preparation Tips

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Updated on May 14, 2026

The NEET 2026 Biology Syllabus carries the highest weightage in the entire NEET UG examination. Biology accounts for 90 questions out of 180 total questions. It contributes 360 marks out of 720 total marks. The National Testing Agency (NTA) released the official NEET 2026 syllabus based on the NCERT curriculum for Class 11 and Class 12. Medical aspirants must thoroughly understand the Biology syllabus to plan their preparation effectively for the upcoming NEET UG 2026 examination.

The NEET Biology section is divided into two equal parts: Botany and Zoology. Each section contains 45 questions worth 180 marks. The syllabus covers 38 chapters across 10 units from Class 11 and Class 12 NCERT textbooks. Students can download the official NEET 2026 Biology Syllabus PDF from neet.nta.nic.in or nmc.org.in websites.

NEET Biology Syllabus: Topic-Wise Weightage

Understanding the topic-wise weightage helps students prioritize their preparation. The NEET Biology section contributes 50% of total marks. Certain chapters consistently carry higher weightage based on previous year analysis. Students should allocate more study time to high-weightage topics.

Unit Name	Class	Expected Questions	Expected Marks	Weightage (%)
Diversity in Living World	11	8-10	32-40	9-11%
Structural Organisation in Animals and Plants	11	5-7	20-28	6-8%
Cell Structure and Function	11	8-10	32-40	9-11%
Plant Physiology	11	10-12	40-48	11-13%
Human Physiology	11	12-15	48-60	13-17%
Reproduction	12	8-10	32-40	9-11%
Genetics and Evolution	12	15-18	60-72	17-20%
Biology and Human Welfare	12	5-7	20-28	6-8%
Biotechnology and Its Applications	12	6-8	24-32	7-9%
Ecology and Environment	12	12-15	48-60	13-17%

Download NEET Biology Syllabus PDF

High-Scoring Topics in NEET 2026 Biology Syllabus

Certain topics consistently yield more questions in NEET Biology. Focusing on these high-scoring topics can significantly improve overall marks. These chapters form approximately 60-70% of the Biology section.

Most Important Chapters for NEET Biology 2026

Chapter Name	Class	Expected Questions	Priority Level
Molecular Basis of Inheritance	12	6-8	Very High
Principles of Inheritance and Variation	12	5-7	Very High
Human Reproduction	12	4-6	Very High
Ecosystem	12	4-5	High
Biotechnology: Principles and Processes	12	3-5	High
Plant Kingdom	11	3-5	High
Animal Kingdom	11	5-7	Very High
Cell: The Unit of Life	11	3-5	High
Biomolecules	11	3-5	High
Digestion and Absorption	11	2-4	Medium-High
Breathing and Exchange of Gases	11	2-3	Medium
Body Fluids and Circulation	11	2-4	Medium-High
Evolution	12	3-4	High
Human Health and Disease	12	3-5	High
Biodiversity and Conservation	12	2-4	Medium-High

Deleted Topics from NEET 2026 Biology Syllabus

The National Medical Commission (NMC) revised the NEET Biology syllabus by removing approximately 5-7% of the content. These deletions were introduced in 2024 and continued for NEET 2026. Students should not waste time studying deleted topics.

Class 11 Biology Deleted Topics

Chapter	Deleted Topics
The Living World	Three domains of life; Tools for study of Taxonomy (Museums, Zoos, Herbaria, Botanical gardens)
Biological Classification	Angiosperms classification up to class with characteristic features and examples
Structural Organisation in Animals	Morphology, anatomy, and functions of digestive, circulatory, respiratory, nervous, and reproductive systems of cockroach
Transport in Plants	Long-distance transport (Absorption, Apoplast, Symplast, Transpiration pull, Root pressure, Guttation)
Mineral Nutrition	Selected detailed mechanisms related to mineral uptake, transport, and translocation
Plant Growth and Development	Vernalization; Seed dormancy
Digestion and Absorption	Detailed alimentary canal; Gastrointestinal hormones; Peristalsis; Absorption of carbohydrates and fats
Neural Control and Coordination	Reflex actions; Sense organs (detailed structure and function of eye and ear)

Class 12 Biology Deleted Topics

Chapter	Deleted Topics
Reproduction in Organisms	Entire chapter removed (Modes of reproduction; Asexual reproduction)
Strategies for Enhancement in Food Production	Entire chapter removed (Animal husbandry; Plant breeding; Single cell proteins; Tissue culture)
Environmental Issues	Entire chapter removed from the revised NEET Biology syllabus
Organisms and Populations	Population and ecological adaptations; Population interactions detailed
Ecosystem	Ecological succession; Nutrient cycling (Carbon and Phosphorus cycles)
Microbes in Human Welfare	Tobacco abuse and its effects

NEET 2026 Biology Syllabus Update: Important Changes

The NEET 2026 Biology syllabus continues to follow the rationalised NCERT syllabus introduced in recent years by the National Medical Commission (NMC). No major structural changes have been introduced compared to NEET 2025. However, students should carefully follow the officially prescribed syllabus because certain topics removed from older NCERT editions remain excluded from the examination.

Key Updates for NEET 2026 Biology

No major new chapters have been added
Several previously deleted topics continue to remain excluded
NCERT Class 11 and Class 12 remain the core preparation source
Genetics, Human Physiology, Ecology, and Biotechnology continue to carry high weightage
Questions are expected to remain highly NCERT-oriented

Students should avoid relying on unofficial “added topics” lists circulating online and instead prepare strictly according to the official NMC and NTA syllabus PDF.

NEET 2026 Biology Exam Pattern

The NEET 2026 exam will be conducted on May 4, 2026, in offline (pen-and-paper) mode. Understanding the exam pattern is crucial for effective time management during the examination.

Particulars	Details
Exam Mode	Offline (Pen and Paper)
Exam Duration	3 hours (180 minutes)
Total Questions	180 (compulsory)
Biology Questions	90 (45 Botany + 45 Zoology)
Total Marks	720
Biology Marks	360 (180 Botany + 180 Zoology)
Marks per Correct Answer	+4
Marks per Wrong Answer	-1 (Negative Marking)
Marks for Unanswered	0
Question Type	Multiple Choice Questions (MCQs)
Medium of Exam	13 Languages (English, Hindi, and 11 Regional Languages)

Biology Section Structure in NEET 2026

Section	Total Questions	Total Marks
Botany	45	180
Zoology	45	180
Total Biology	90	360

NEET 2026 Biology Preparation Mistakes to Avoid

Many NEET aspirants lose marks in Biology due to avoidable preparation mistakes rather than lack of knowledge. Avoiding these common errors can significantly improve Biology scores.

Common Mistakes Students Should Avoid

Ignoring NCERT diagrams and tables
Memorising without conceptual understanding
Skipping repeated revision
Solving MCQs without analysing mistakes
Ignoring previous year NEET Biology questions
Using too many reference books simultaneously
Neglecting scientific names, examples, and exceptions
Spending excessive time on deleted syllabus topics

Students should maintain a revision-focused approach and prioritize accuracy, NCERT retention, and mock test analysis.

Preparation Tips for the NEET 2026 Biology Exam

Biology is considered the most scoring subject in NEET. Strategic preparation can help students achieve 300+ marks in Biology. Following proven preparation strategies ensures comprehensive coverage and better retention.

Essential Preparation Strategies

NCERT is the Bible: Read NCERT Biology Class 11 and 12 textbooks line by line. Approximately 90-95% of Biology questions come directly or indirectly from NCERT.
Focus on Diagrams: Practice and memorize all diagrams, flowcharts, and labeling. Many questions are diagram-based.
Create Short Notes: Prepare concise notes for each chapter including definitions, scientific names, examples, and exceptions.
Solve Previous Year Questions: Practice at least 10 years of NEET Biology previous year papers to understand question patterns.
Regular Revision: Revise each chapter at least 3-4 times before the exam. Biology requires repetitive reinforcement.
Time Management: Complete Biology section in 40-45 minutes during actual exam to save time for Physics and Chemistry.
Focus on Tables: Memorize comparison tables, disease tables, and classification tables thoroughly.
Use Mnemonics: Create memory techniques for remembering sequences, classifications, and lists.

NEET 2026 Biology Syllabus: Complete Breakdown

Class 11 NEET Biology Syllabus

Unit	Chapters	Key Topics
Diversity in Living World	The Living World, Biological Classification, Plant Kingdom, Animal Kingdom	What is living; Taxonomy; Five kingdom classification; Viruses; Viroids; Lichens; Salient features of plant and animal kingdoms
Structural Organisation in Plants and Animals	Morphology of Flowering Plants, Anatomy of Flowering Plants, Structural Organisation in Animals	Root, stem, leaf, flower morphology; Tissues; Anatomy of dicot and monocot; Animal tissues
Cell Structure and Function	Cell: The Unit of Life, Biomolecules, Cell Cycle and Cell Division	Cell theory; Prokaryotic and eukaryotic cells; Organelles; Carbohydrates; Proteins; Lipids; Nucleic acids; Enzymes; Mitosis; Meiosis
Plant Physiology	Transport in Plants, Mineral Nutrition, Photosynthesis in Higher Plants, Respiration in Plants, Plant Growth and Development	Water transport; Transpiration; Essential minerals; Photosynthesis mechanism; Glycolysis; Krebs cycle; Plant hormones
Human Physiology	Digestion and Absorption, Breathing and Exchange of Gases, Body Fluids and Circulation, Excretory Products and Elimination, Locomotion and Movement, Neural Control and Coordination, Chemical Coordination and Integration	Digestive system; Respiratory system; Blood; Heart; Kidney; Skeletal system; Muscular system; Nervous system; Endocrine system

Class 12 NEET Biology Syllabus

Unit	Chapters	Key Topics
Reproduction	Sexual Reproduction in Flowering Plants, Human Reproduction, Reproductive Health	Flower structure; Pollination; Fertilization; Male and female reproductive systems; Gametogenesis; Menstrual cycle; Pregnancy; Contraception
Genetics and Evolution	Principles of Inheritance and Variation, Molecular Basis of Inheritance, Evolution	Mendel's laws; Inheritance patterns; DNA replication; Transcription; Translation; Genetic code; Origin of life; Evidences of evolution; Human evolution
Biology and Human Welfare	Human Health and Disease, Microbes in Human Welfare	Pathogens; Diseases; Immunity; AIDS; Cancer; Drugs; Microbes in food; Industrial products; Biogas; Sewage treatment
Biotechnology and Its Applications	Biotechnology: Principles and Processes, Biotechnology and Its Applications	Genetic engineering; rDNA technology; PCR; Gene cloning; Transgenic animals; Biopiracy; GMOs; Gene therapy
Ecology and Environment	Organisms and Populations, Ecosystem, Biodiversity and Conservation	Organism and environment; Population attributes; Ecosystem structure; Food chain; Ecological pyramids; Biodiversity; Conservation strategies

Best Books for NEET 2026 Biology Syllabus

Preparing from the right books is essential for scoring well in NEET Biology because most questions are directly based on NCERT concepts, diagrams, and examples. While NCERT Biology remains the most important resource, additional practice books help improve MCQ-solving accuracy and conceptual reinforcement.

Book Name	Author/Publisher	Purpose
NCERT Biology Class 11	NCERT	Primary Resource (Must Read)
NCERT Biology Class 12	NCERT	Primary Resource (Must Read)
Trueman's Elementary Biology Vol. 1 & 2	K.N. Bhatia & M.P. Tyagi	Conceptual Clarity and Practice
Objective Biology	Dinesh Publications	MCQ Practice
MTG NCERT at Your Fingertips - Biology	MTG Editorial Board	NCERT-Based MCQ Practice
Pradeep's Biology	Pradeep Publications	Detailed Concepts
Objective Botany	Ansari	Botany Practice
GR Bathla Publications Biology	G.R. Bathla	Theory and Objective
35 Years NEET Chapter-wise PYQs	MTG/Disha	Previous Year Practice

Class 11 Biology Topic-Wise Weightage

Class 11 Biology contributes approximately 45-50% of total Biology questions in NEET. Understanding chapter-wise weightage helps prioritize preparation.

Chapter	Expected Questions	Weightage (%)	Difficulty
The Living World	1-2	2-3%	Easy
Biological Classification	2-3	3-4%	Moderate
Plant Kingdom	3-5	5-7%	Moderate
Animal Kingdom	5-7	7-9%	Moderate-High
Morphology of Flowering Plants	2-3	3-4%	Easy
Anatomy of Flowering Plants	2-3	3-4%	Moderate
Structural Organisation in Animals	2-3	3-4%	Moderate
Cell: The Unit of Life	3-5	5-6%	Moderate
Biomolecules	3-5	5-6%	Moderate
Cell Cycle and Cell Division	2-4	3-5%	Moderate
Photosynthesis in Higher Plants	3-4	4-5%	Moderate-High
Respiration in Plants	2-3	3-4%	Moderate
Plant Growth and Development	2-3	3-4%	Easy-Moderate
Digestion and Absorption	2-4	3-5%	Easy
Breathing and Exchange of Gases	2-3	3-4%	Easy
Body Fluids and Circulation	2-4	3-5%	Moderate
Excretory Products and Elimination	2-3	3-4%	Moderate
Locomotion and Movement	2-3	3-4%	Easy-Moderate
Neural Control and Coordination	3-4	4-5%	Moderate-High
Chemical Coordination and Integration	2-3	3-4%	Moderate

Class 12 Biology Topic-Wise Weightage

Class 12 Biology contributes approximately 50-55% of total Biology questions. Genetics and Evolution carries the highest weightage from Class 12.

Chapter	Expected Questions	Weightage (%)	Difficulty
Sexual Reproduction in Flowering Plants	3-5	4-6%	Moderate
Human Reproduction	4-6	5-7%	Moderate
Reproductive Health	2-3	3-4%	Easy
Principles of Inheritance and Variation	5-7	7-9%	Moderate-High
Molecular Basis of Inheritance	6-8	8-10%	High
Evolution	3-4	4-5%	Moderate
Human Health and Disease	3-5	4-6%	Easy-Moderate
Microbes in Human Welfare	2-3	3-4%	Easy
Biotechnology: Principles and Processes	3-5	4-6%	Moderate-High
Biotechnology and Its Applications	2-4	3-5%	Moderate
Organisms and Populations	3-4	4-5%	Easy-Moderate
Ecosystem	4-5	5-6%	Easy-Moderate
Biodiversity and Conservation	2-4	3-5%	Easy

NEET 2026 Botany Marks Distribution

Botany constitutes 50% of the NEET Biology section with 45 questions worth 180 marks. The distribution covers chapters from both Class 11 and Class 12.

Unit/Topic Area	Expected Questions	Expected Marks	Key Chapters
Plant Diversity	5-8	20-32	Biological Classification, Plant Kingdom
Plant Morphology and Anatomy	4-6	16-24	Morphology of Flowering Plants, Anatomy of Flowering Plants
Cell Biology (Plant-related)	4-6	16-24	Cell Structure, Biomolecules, Cell Division
Plant Physiology	8-12	32-48	Photosynthesis, Respiration, Plant Growth
Plant Reproduction	3-5	12-20	Sexual Reproduction in Flowering Plants
Genetics (Plant-related)	5-7	20-28	Principles of Inheritance, Molecular Basis of Inheritance
Ecology (Plant-related)	6-8	24-32	Ecosystem, Biodiversity
Biotechnology	4-6	16-24	Biotechnology Principles and Applications

NEET 2026 Zoology Marks Distribution

Zoology constitutes 50% of the NEET Biology section with 45 questions worth 180 marks. Human Physiology and Genetics carry the highest weightage in Zoology.

Unit/Topic Area	Expected Questions	Expected Marks	Key Chapters
Animal Diversity	5-7	20-28	Animal Kingdom
Structural Organisation in Animals	2-4	8-16	Animal Tissues
Human Physiology	12-15	48-60	Digestion, Respiration, Circulation, Excretion, Neural Control, Endocrine System
Human Reproduction	5-7	20-28	Human Reproduction, Reproductive Health
Genetics and Evolution	8-10	32-40	Inheritance, Molecular Genetics, Evolution
Human Health and Disease	3-5	12-20	Diseases, Immunity, AIDS, Cancer
Microbes in Human Welfare	2-3	8-12	Useful Microbes

Preparation Strategy for Scoring 340+ in NEET Biology in One Month

Scoring 340+ marks in NEET Biology within one month requires focused preparation on high-weightage topics and extensive revision. This strategy is suitable for students who have already completed the syllabus at least once.

Key Tips for 340+ in One Month

Read NCERT Biology 3-5 times focusing on examples, diagrams, and boxed text
Solve minimum 50-100 MCQs daily from each chapter
Take 2-3 full-length mock tests every week
Analyze every mistake and note down weak areas
Focus 70% time on high-weightage chapters (Genetics, Human Physiology, Ecology)
Create one-page summary for each chapter for last-day revision
Memorize all scientific names, diseases, hormones, and enzymes

NEET Biology Previous Year Question Paper Analysis

Analyzing previous year question papers reveals important patterns and frequently asked topics. Students should solve at least 10 years of NEET Biology papers.

Year	Difficulty Level	Most Questions From	Observation
NEET 2024	Easy to Moderate	Genetics, Human Physiology, Ecology	More NCERT-based direct questions; Lengthy paper
NEET 2023	Moderate	Molecular Biology, Plant Physiology, Human Reproduction	Conceptual questions increased; Diagram-based questions
NEET 2022	Moderate to Difficult	Genetics, Biotechnology, Ecology	Application-based questions; NCERT examples asked
NEET 2021	Moderate	Human Physiology, Genetics, Animal Kingdom	Balanced paper; Statement-based questions
NEET 2020	Easy to Moderate	Genetics, Human Physiology, Reproduction	Direct NCERT questions; Less calculation-based

Most Repeated Biology Units in NEET (2019–2025 Trend Analysis)

Unit	Frequency Level
Genetics and Evolution	Very High
Human Physiology	Very High
Ecology and Environment	High
Biotechnology	High
Cell Biology	High
Reproduction	High
Plant Physiology	Moderate
Diversity in Living World	Moderate

Genetics and Human Physiology consistently contribute the highest number of questions in NEET Biology every year. Students targeting 320+ Biology scores should prioritize these units during revision and mock test practice.

Is NCERT enough for NEET Biology 2026?

Yes, NCERT is sufficient for NEET Biology. Approximately 90-95% of Biology questions come directly or indirectly from NCERT textbooks. Students should read NCERT Biology Class 11 and Class 12 line by line, including diagrams, examples, and boxed information. Additional reference books like Trueman's Biology and MTG Fingertips are useful only for MCQ practice after completing NCERT.

How many questions come from Class 11 and Class 12 in NEET Biology?

NEET Biology has 90 questions divided almost equally between Class 11 and Class 12. Typically, 40-45 questions come from Class 11 (Diversity, Cell Biology, Plant Physiology, Human Physiology) and 45-50 questions from Class 12 (Reproduction, Genetics, Ecology, Biotechnology). Class 12 chapters like Molecular Basis of Inheritance and Principles of Inheritance carry slightly higher weightage.

Which chapters should I focus on for scoring maximum marks in NEET Biology?

High-scoring chapters include Molecular Basis of Inheritance (6-8 questions), Principles of Inheritance and Variation (5-7 questions), Human Physiology chapters (12-15 questions combined), Animal Kingdom (5-7 questions), Ecology (10-12 questions), and Biotechnology (5-7 questions). Mastering these chapters can fetch you approximately 200-220 marks out of 360. Never skip NCERT examples and diagrams from these chapters.

How to prepare Biology for NEET in the last 30 days?

In the last 30 days, focus on revision rather than learning new topics. Read NCERT at least 2-3 times during this period. Solve 50-100 MCQs daily from previous year papers. Take full-length mock tests every alternate day. Create one-page summaries for quick revision. Focus 70% of your time on high-weightage chapters. Practice all diagrams and memorize scientific names, diseases, and enzyme classifications.

What is the ideal time to complete Biology section in NEET exam?

Students should complete the Biology section in 40-50 minutes during the actual exam. This leaves adequate time for Physics and Chemistry. Biology questions are relatively easier and direct from NCERT. Start the exam with Biology as it builds confidence. Attempt Botany first followed by Zoology. Do not spend more than 30 seconds on a single question. Mark doubtful questions for review and move on.

Can I score 300+ marks in NEET Biology without coaching?

Yes, scoring 300+ marks in NEET Biology is achievable without coaching. Self-study using NCERT textbooks forms the foundation. Students on platforms like Reddit and Quora have reported achieving 320-340 marks through self-study by following a disciplined study schedule. Key requirements include multiple NCERT readings, solving 10+ years of previous papers, and taking regular mock tests. Online resources like YouTube lectures and free test series supplement self-preparation effectively.

Are deleted topics from NEET Biology syllabus completely removed?

Yes, deleted topics will not be directly asked in NEET 2026. Topics like Three Domains of Life, Cockroach anatomy (detailed), and Environmental Issues (Ozone depletion, Greenhouse effect) have been removed. However, students should understand that Biology is interconnected. Basic understanding of deleted topics helps comprehend related concepts. For example, understanding Mineral Nutrition helps in Plant Physiology questions. Do not waste extensive time on deleted topics but maintain basic clarity.

How important are diagrams in NEET Biology?

Diagrams are extremely important in NEET Biology. Approximately 10-15 questions are directly diagram-based. Questions involve identifying parts, labeling structures, and matching diagrams with functions. Important diagrams include human heart structure, nephron, neuron, cell organelles, flower parts, DNA structure, and reproductive system diagrams. Practice drawing and labeling diagrams daily. Many students lose marks due to poor diagram preparation.

What books should I refer to after completing NCERT for NEET Biology?

After completing NCERT, refer to MTG NCERT at Your Fingertips for NCERT-based MCQ practice. Trueman's Elementary Biology provides conceptual clarity and additional practice. For previous year questions, use MTG or Disha 35 Years Chapter-wise PYQs. For weak topics, refer to coaching modules from Allen, Aakash, or Physics Wallah. Avoid studying from too many books. Stick to NCERT + one MCQ book + PYQ book for comprehensive preparation.

Is it possible to score 360 marks (full marks) in NEET Biology?

Scoring 360 marks in NEET Biology is challenging but achievable. NEET toppers have scored 350-360 marks in Biology. This requires reading NCERT at least 5-7 times, memorizing every diagram and example, solving thousands of MCQs, and excellent time management during the exam. Avoid silly mistakes and careless reading of questions. Focus on accuracy over speed. Many students lose 20-40 marks due to careless errors rather than lack of knowledge.

Is NEET Biology tougher than NCERT?

NEET Biology is primarily NCERT-based, but recent papers increasingly include statement-based and application-oriented questions. While direct factual questions still dominate, students must understand concepts clearly rather than relying only on memorization. Solving previous year papers and mock tests helps adapt to the evolving difficulty level.

Which is more important for NEET Biology: NCERT or reference books?

NCERT Biology is the most important resource for NEET preparation and should always be completed first. Reference books are mainly useful for MCQ practice and concept reinforcement after NCERT revision. Students should avoid depending excessively on multiple books because repeated NCERT revision contributes the highest benefit in NEET Biology preparation.