NEET 2025 Biology Syllabus PDF (Released)- Download NEET Biology Syllabus Topic wise

Updated By Vandana Thakur on 19 Dec, 2024 14:15

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NEET Biology Syllabus 2025 (Out)

NEET Biology Syllabus 2025 has been released by the National Medical Commission (NMC) on December 17, 2024. NEET Biology Syllabus topics include units like diversity in the living world, human physiology, genetics & evolution, biology & human welfare and so on. There are no changes in topics or chapters of the NEET Biology Syllabus 2025 and the previous year's topics are repeated for the NEET Exam 2025 as declared by the NMC authorities. The updated NEET 2025 biology syllabus mostly consists of topics from class 11 and class 12 NCERT botany and zoology books. The exam is expected to be held in the first week of May 2024 i.e., May 4, 2025, in the NEET exam centres. Therefore, students must strategically create a study plan with the important topics and study to get good marks in the biology section of the NEET exam. On this page, learn in detail about the NEET 2025 biology syllabus key points, chapter-wise weightage & marks distribution, important topics, and more. 

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NEET Biology Syllabus 2025 Overview

The NEET Biology section consists of 90 questions in the exam paper. Students can find the NEET Biology Syllabus 2025 overview given below.

Particulars

Details

Name of exam

NEET UG 2025-26

Exam conducting body

National Testing Agency (NTA)

Duration of exam

200 minutes

Syllabus available mode

Online (PDF format)

NMC NEET 2025 Syllabus - Official Website

neet.ntaonline.in

Subjects included

Physics, Chemistry, Biology

Total questions from the NEET Syllabus for Biology 2025

100 (90 need to be attempted)

Maximum marks

720 Marks

NEET Biology Syllabus 2025 PDF Download

The NMC has issued a compiled PDF containing the NEET syllabus for Biology, Chemistry, and Physics. Aspirants can access the NEET 2025 Biology syllabus by using the provided direct link for download.

NEET Biology Syllabus 2025 PDF

Download Here

To download the NEET syllabus for Physics and Chemistry, check out the links given below. 

NEET Physics Syllabus 2025

NEET Chemistry Syllabus 2025

NEET Biology Syllabus 2025 - List of Chapters/Units

Every subject from NEET syllabus carries 180 marks, it is important to score above 120 in all subjects to be able to enrol in top colleges. Here's How to Score 120+ in NEET 2025 Biology. Enlisted below are the names of chapters/units included in NEET Biology Syllabus 2025 -

  1. Diversity in Living World
  2. Ecology and environment
  3. Human physiology
  4. Biotechnology and Its Applications
  5. Structural Organisation in Animals & Plants
  6. Biology and Human Welfare
  7. Cell Structure and Function
  8. Reproduction
  9. Plant Physiology
  10. Genetics and Evolution

NEET Biology Syllabus 2025 Class 11 Important Topics

The class 11 Biology syllabus for NEET 2025 consists of five units. Mentioned below are the topics included in each unit (from 1 to 5) of the NEET biology syllabus. Creating a proper NEET 2025 Biology Study Plan will help you cover all the topics completely. 

Unit

Unit Name

Topics

1

Diversity in Living World

  • What is living? 
  • Biodiversity
  • Concept of species and taxonomic hierarchy
  • Binomial nomenclature
  • Need for classification
  • Taxonomy & Systematics
  • Five kingdom classification
  • Salient features and classification of Monera 
  • Protista and Fungi into major groups: Lichensl Viruses and Viroids.
  • Salient features and classification of plants into major groups, Bryophytes, Pteridophytes, Gymnosperms 
  • Salient features and classification of animals-nonchordate up to phyla level and chordate

up to class level

2

Human physiology

  • Breathing and Respiration: Respiratory organs in animals (recall only)
  • Respiratory system in humans; Mechanism of breathing and its regulation in human exchange of gases, transport of gases and regulation of respiration Respiratory volumes
  • Disorders related to respiration-Asthma Emphysema, and Occupational respiratory disorders.
  • Body fluids and circulation: composition of blood, blood groups, coagulation of blood
  • Composition of lymph and its function 
  • Human circulatory system structure of human heart and blood vessels
  • Cardiac cycle, cardiac output. ECG, Double circulation;
  • Regulation of cardiac activity 
  • Disorders of circulatory system-Hypertension, coronary

artery disease, Angina pectoris, and Heart failure.

  • Excretory products and their elimination: Modes of excretion- Ammonotelism, ureotelism, uricotelism. 
  • Human excretory system-structure and function
  • Urine formation, osmoregulation 
  • Regulation of kidney function-Renin-angiotensin, Atrial

Natriuretic Factor' ADH and Diabetes insipidus.

  • Role of other organs in excretion
  • Disorders; Uraemia, Renal failure, Renal calculi, Nephritis; 
  • Dialysis and artificial kidney.
  • Locomotion and Movement
  • Types of movement- ciliary, flagellar, muscular
  • Skeletal muscle- contractile proteins and muscle contraction
  • Skeletal system and its functions
  • Joints; Disorders of the muscular and skeletal system- Myasthenia gravis, Tetany, Muscular Dystrophy, Arthritis, Osteoporosis, Gout.
  • Neural control and coordination: Neuron and nerves
  • Nervous system in humans central Nervous system, peripheral nervous system and visceral nervous system
  • Generation and conduction of nerve impulse
  • Chemical coordination and regulation
  • Endocrine glands and hormones
  • Human endocrine system-Hypothalamus, pituitary, pineal, Thyroid, parathyroid, Adrenal, Pancreas, Gonads
  • Mechanism of hormone action (Elementary idea)
  • Role of hormones as messengers and regulators
  •  Hypo-and hyperactivity and related disorders (common
  • disorders e.g. Dwarfism, Acromegaly, Cretinism, goiter, exophthalmic goiter, diabetes, Addison's disease).

3

Structural Organisation in Animals & Plants

  • Animal tissues; Morphology, anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of an insect (Frog). (Brief account only)

Note: Frog is not an insect. It is anticipated that NMC NEET syllabus 2025 was released with some errors that will be rectified in the near future.

  • Morphology and modifications; Tissues; Anatomy and functions of different parts of flowering plants: Root, stem, leaf, inflorescence- cymose and racemose, flower, fruit and seed. 

4

Cell Structure and Function

  • Cell theory and cell as the basic unit of life
  • Structure of prokaryotic and eukaryotic cell
  • Plant cell and animal cell; Cell envelope, cell membrane, cell wall
  • Cell organelles structure and function
  • Endomembrane system-endoplasmic reticulum Golgi bodies, lysosomes, vacuoles; mitochondria, ribosomes, plastids, micro bodies
  • Cytoskeleton cilia flagella centrioles (ultra structure and function)
  • Nucleus-nuclear membrane, chromatin, nucleolus.
  • Chemical constituents of living cells
  • Biomolecules-structure and function of proteins, carbohydrates, lipids, nucleic acids
  • Enzymes-types, properties, enzyme action, classification and nomenclature of enzymes
  • B Cell division: Cell cycle, mitosis, meiosis and their significance

5

Plant Physiology

  • Photosynthesis: Photosynthesis as a means of Autotrophic nutrition
  • Site of photosynthesis takes place pigments involved in Photosynthesis (Elementary-.idea)
  • Photochemical and biosynthetic phases of photosynthesis; Cyclic and non-cyclic and photophosphorylation chemiosmotic hypothesis
  • Photorespiration C3 and C4 pathways; Factors affecting photosynthesis
  • Respiration: Exchange gases
  • Cellular respiration-glycolysis, fermentation (anaerobic),TCA cycle and electron transport system (aerobic)
  • Energy relations- Number of ATP molecules generated Amphibolic pathways
  • Respiratory quotient.
  • Plant growth and development
  • Seed germination; phases of plant growth and plant growth rate 
  • Conditions of growth- Differentiation, dedifferentiation and redifferentiation 
  • The sequence of developmental process in a plant cell
  • Growth regulators - auxin, gibberellin, cytokinin, ethylene, ABA

NEET Biology Syllabus 2025 Class 12 Important Topics

The total number of units included in the syllabus of Class 12th is five. Candidates can refer to the table below for elaboration of all the six units. 

Unit

Unit Name

Topics

1

Reproduction

  • Human Reproduction: Male and female reproductive systems; Microscopic anatomy of testis and ovary
  • Gametogenesis-spermatogenesis & oogenesis
  • Menstrual cycle
  • Fertilisation, embryo development up to blastocyst formation, implantation
  • Pregnancy and placenta formation (Elementary idea); Parturition (Elementary idea)
  • Lactation (Elementary idea)
  • Sexual reproduction in flowering plants
  • Flower structure
  • Development of male and female gametophytes
  • Pollination types, agencies and examples; Outbreeding devices, Pollen-Pistil interaction
  • Double fertilization
  • Post-fertilization events- Development of endosperm and embryo
  • Development of seed and formation of fruit
  • Special modes apomixis, parthenocarpy, polyembryony; Significance of seed and fruit formation.
  • Reproductive health: Need for reproductive health and prevention of sexually transmitted diseases (STD)
  • Birth control and Methods, Contraception and

Medical Termination of Pregnancy (MTP)

  • Amniocentesis
  • infertility and assisted reproductive technologies - IVF, ZIFT, GIFT (Elementary idea for general awareness).

2

Genetics and Evolution

  • Heredity and variation: Mendelian inheritance
  • Deviations from Mendelism Incomplete dominance, Co-dominance, Multiple alleles and Inheritance of blood groups, Pleiotropy
  • Elementary idea of polygenic inheritance; Chromosome theory of inheritance
  • Chromosomes and genes
  • Sex determination In humans, birds, honey bee
  • Linkage and crossing over
  • Sex-linked inheritance-Haemophilia colour blindness
  • Mendelian disorders in humans-Thalassemia
  • Chromosomal disorders in humans - Down's syndrome, Turner's and Klinefelter's syndromes.
  • Molecular basis of Inheritance: Search for genetic material and DNA as genetic material
  • Structure of DNA and RNA
  • DNA packaging
  • DNA replication
  • Central dogma; Transcription, genetic code, translation
  • Gene expression and regulation- Lac Operon
  • Genome and human genome project
  • DNA fingerprinting, protein biosynthesis.
  • Evolution: Origin of life; Biological evolution and evidence for biological evolution from Paleontology, comparative anatomy, embryology and molecular evidence)
  • Darwin’s contribution, modern synthetic theory of Evolution
  • Mechanism of evolution (Mutation and Recombination) and Natural Selection with examples, types of natural selection
  • Gene flow and genetic drift
  • Hardy-weinberg's principle
  • Adaptive Radiation; Human evolution

3

Biotechnology and its Applications

  • Principles and process of Biotechnology: Genetic engineering (Recombinant DNA Technology).
  • Application of Biotechnology: Genetic Engineering (Recombinant DNA technology)
  • Human insulin and vaccine production, gene therapy, genetically modified organisms-bt crops
  • Transgenic Animals
  • Biosafety issues - Biopiracy and Patents

4

Biology and Human Welfare

  • Health and Disease; Pathogens; parasites causing human diseases (Malaria, Filariasis, Ascariasis, Typhoid, Pneumonia, common cold, amoebiasis, ringworm, dengue, chikungunya)
  • Basic concepts of immunology-vaccines
  • Cancer, HIV and AIDS
  • Adolescence, Drug and Alcohol abuse, Tobacco abuse
  • Microbes in human welfare: In household food processing, industrial production sewage treatment, energy generation and as biocontrol agents and biofertilizers.

5

Ecology and Environment

  • Organisms and environment  
  • Population interactions-mutualism, competition, predation, parasitism 
  • Population attributes- growth, birth rate and death rate, age distribution.
  • Biodiversity and its conservation
  • Concept of Biodiversity
  • Patterns of Biodiversity
  • Importance of Biodiversity
  • Loss of Biodiversity, Biodiversity conservation
  • Hotspots, endangered organisms, extinction
  • Red Data Book, Biosphere reserves, National parks.
  • and sanctuaries, Sacred Groves.
  • Ecosystem: Patterns, components; productivity and decomposition
  • Energy flow
  • Pyramids of number, biomass, energy
Note: It is best to go through NEET 2025 Biology Revision Notes alongside NEET Biology preparation.

NEET Biology Syllabus Important Topics 2025

NEET biology syllabus is vast, hence it is required for candidates to focus more on the important topics. A few questions are always asked from the NEET Biology Syllabus Important Topics are mentioned below. Referring to Best Books for NEET 2025 Recommended by Toppers will help candidates cover all the key topics better.

Important Topics from NEET 2025 Syllabus for Biology

Botany

Zoology

  • Ecology
  • Plant Physiology
  • Genetics
  • Plant Anatomy
  • Division and Cell Biology
  • Plant Diversity
  • Plant Reproduction and Morphology
  • Bio-molecule
  • Biotechnology 
  • Biology in Human Welfare
  • Cell and cell cycle
  • Animal Husbandry
  • Animal kingdom
  • Animal Diversity
  • Genetics 
  • Reproductive health
  • Evolution
  • Human Physiology
  • Human Reproduction
  • Human Health and Diseases
  • Biotechnology
  • Biomolecules
  • Diversity of living organisms
  • Structural organization in animals

NTA NEET Biology Syllabus 2025 Chapter Wise Weightage

Before deep-diving into the chapter-wise weightage and mark distribution in the NEET Biology section, it is important to know the exam pattern and the NEET 2025 Biology Section-wise breakdown.

NEET Exam Pattern 2025 - Biology Section

Particulars

Details

NEET 2025 Total Marks 

720

Total Time Duration

3 Hour 20 minutes

NEET Biology Section Breakdown

Zoology (Section A and B)

Botany (Section A and B)

Zoology Total Marks 

180

Botany Total Marks

180

Total Marks for NEET Biology Section

360

Biology Section Weightage

50%

NEET Biology Chapter Wise Weightage 

A thorough understanding of NEET Biology Chapter Wise Weightage and Mark Distribution helps in saving time during the peak time of NEET preparations. Revisions and last-minute studying for one of the toughest exams in India is not an easy task. It requires a lot of attention and preparation strategies. 

NEET Botany Chapter Wise Weightage and Mark Distribution

The table below consists of detailed NEET Biology Chapter Wise Weightage and Mark Distribution for the session 2025-25.

Botany Chapters

Number of Questions Asked

Weightage

Ecology-Biodiversity and Conservation – Introduction, Level of biodiversity, Pattern of biodiversity, Loss of biodiversity

2

4%

Genetics II – Nucleic Acids (The Genetic Material, DNA, RNA)

4

8%

Ecology-Environmental Issues – Types of pollutants, Types of pollution-Air pollution, Noise pollution, Acid rain, Ozone depletion, Water pollution

1

2%

Application Biology (Biotechnology) – Principles of Biotechnology

4

8%

Ecology-Organisms and Population – Introduction, Abiotic factors, Responses to abiotic factors

2

4%

Plant Physiology-I-Mineral Nutrition – Methods to study mineral requirements of plants, Essential mineral elements, Role of macro and micronutrients, deficiency symptoms of essential elements, Toxicity of micronutrients

2

4%

Cell Biology – Introduction, Prokaryotic Cell

5

10%

Sexual Reproduction in Flowering Plants – Sexual Reproduction Introduction

4

8%

Biomolecule – I – Carbohydrates

1

2%

Plant Kingdom-Algae

2

4%

Biomolecule-II – Nucleic Acids

1

2%

Plant Physiology-II-Plant growth and Growth Hormones – Growth and Development

4

8%

Total

50 Questions

100%

NEET Zoology Chapter Wise Weightage and Mark Distribution

Zoology is interesting yet one of the most challenging subjects of the NEET 2025 exam. Here’s a table that demonstrates the chapter-wise weightage and marks distribution for the NEET Zoology section. 

Zoology Chapters

Number of Questions Asked

Weightage

Chemical Coordination and Integration -Endocrine Gland

3

6%

Cell Biology – Introduction, Prokaryotic Cell

4

8%

Genetics I – Introduction, Mendelism, Monohybrid Cross, Dihybrid Cross, Back Cross, Test Cross, Incomplete Dominance, Codominance, Multiple Alleflism, Pleiotropy

2

4%

Human Reproduction and Reproductive Health – Male Reproductive System

6

12%

Ecology-Environmental Issues – Types of pollutants, Types of pollution-Air pollution, Noise pollution, Acid rain, Ozone depletion, Water pollution

1

2%

Biomolecule-II – Nucleic Acids

1

2%

Excretory Products and Their Elimination – Homeostasis and Osmoregulation

1

2%

Biology In Human Welfare – Microbes in Human Welfare

1

2%

Locomotion and Movement – Muscles

2

4%

Origin and Evolution – Origin of Life

2

4%

Application Biology – Principles of Biotechnology

2

4%

Genetic II – Nucleic Acids (The Generic Material, DNA, RNA) 

3

6%

Ecology-Organisms and Population – Introduction, Abiotic factors, Responses to abiotic factors

1

2%

Digestion and Absorption – Nutrition

2

4%

Structural Organisation in Animal – Epithelial tissue

1

2%

Breathing and Exchange of Gases – Respiratory Organ

1

2%

Neural Control and Coordination – Nervous Tissue

2

4%

Animal Kingdom-2 – Chordata

2

4%

Biology In Human Welfare-Strategies for Enhancement of Food Production in Animal

1

2%

Animal Kingdom-1 – Porifera

4

8%

Biology In Human Welfare-Human Health and Disease – Diseases caused by virus

3

6%

Structural organization in animals – Connective tissue

1

2%

Total

50 Questions

100%

NEET Syllabus Biology 2025 Deleted Topics

Many Senior Secondary boards like National Institute of Open Schooling (NIOS), Jammu and Kashmir Board of School Education, Maharashtra State Board of Secondary and Higher Secondary Education and state boards have removed or deleted certain topics from the syllabus of class 11 and class 12. Following are the topics that are removed from the revised NEET 2025 Syllabus for Biology released by NMC on October 22, 2023. 

  • Digestion and Absorption
  • Environmental Issues
  • Transport in Plants
  • Reproduction in Organisms
  • Angiosperm
  • Mineral Nutrition
  • Alternation of Generation
  • Taxonomic Aid
  • Strategies for Enhancement in Food Production

NEET Biology Syllabus 2025 Added Topics

This year, NMC has made changes to the NEET syllabus. Two topics have been added to the NEET Biology Syllabus 2025. Refer to the table below for newly added topics in the Biology syllabus.

Unit Name

Topics

Unit 2 - Structural Organisation in Animals and Plants

Family (Malvaceae, Cruciferae, Leguminoceae, Compositae, Gramineae)

Insect (Frog) 

Best Books for NEET Biology Syllabus 2025

While preparing for the NEET 2025 biology section, students must pick up some of the best books for a focused approach towards their study roadmap. Students can find the best books to cover up the NEET Biology syllabus 2025 are stated below.

Book Title

Author/Publisher

Class 11 and Class 12 NCERT Biology textbooks

-

Biology Vol. 1 and 2 by Pradeep Publications

Pradeep Publications

Trueman’s Objective Biology for NEET

M.P. Tyagi

GRB Bathla’s Publications for Biology

GRB Bathla’s Publications

Objective Biology by Dinesh

Dinesh

NEET Previous Year Question Paper

Solving NEET previous year question papers is crucial for grasping the exam pattern. It acquaints candidates with the format, question distribution, and time constraints, enhancing familiarity with the actual test. To check their understanding of the NEET Biology Syllabus 2025, and become familiar with the exam pattern, candidates should solve the NEET Previous Year Question Paper.  Understanding the pattern allows for efficient time allocation, strategic planning, and improved confidence during the exam. Additionally, analyzing past papers helps in identifying recurring question types, variations in difficulty levels, and trends over the years. This comprehensive insight aids in formulating an effective study strategy, making candidates better prepared to navigate the NEET exam with precision and confidence.

How to properly cover NEET Biology Syllabus 2025?

To effectively cover the NEET Biology Syllabus for 2025, here's what you can do:

  1. Know Your Syllabus: Understand the updated NEET Biology Syllabus for 2025. Understand which topics are more important so you can focus on them.

  2. Break It Down: Divide the syllabus into smaller sections based on sub-topics. This will help you plan your study sessions more efficiently.

  3. Use Good Books: Use recommended textbooks like "Biology" by NCERT, "Trueman’s Elementary Biology," "Objective Biology" by Dinesh Publications, and "Biology" by Pradeep Publications.

  4. Explore Online Resources: Check out platforms like Khan Academy, NEETPrep, and BYJU for video lectures, courses, and study materials.

  5. Take Notes: Summarize important points, formulas, and diagrams as you study. These notes will come in handy during revision.

  6. Practice, Practice, Practice: Solve lots of MCQs from past NEET papers and take mock tests to get used to the exam pattern and improve your problem-solving skills.

  7. Review Regularly: Set aside time for regular revision. Go over your notes frequently and revisit any tough topics for better understanding.

  8. Ask for Help When Needed: If you're stuck on something, don't be afraid to ask your teachers, mentors, or online forums for help.

  9. Stay Updated: Keep yourself informed about the latest developments in Biology through scientific journals and online resources to deepen your understanding.

Following these steps will help you cover the NEET Biology Syllabus 2025 exam.

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