NEET 2025 Biology Syllabus
NEET Biology Syllabus 2025: Zoology & Botany
The NEET UG 2025 exam emphasizes the Biology syllabus for NEET 2025 from both classes 11th and 12th. Biology carries the highest weightage among all subjects in the NEET syllabus, making it crucial for aspirants to prioritize their studies. Understanding the chapter-wise weightage of the NEET Biology syllabus 2025 can help students focus on important topics first. This section comprises 90 questions covering both Botany and Zoology.
It’s important to note that the NEET 2025 Biology syllabus is based on NCERT books, so students are advised to thoroughly study them. However, the updated NEET 2025 Biology syllabus includes some additional topics not found in the previous NCERT syllabus. It’s recommended to review the updated NEET 2025 Biology syllabus released by the NTA for more details.
NEET 2025 Biology Syllabus Latest Update
In October, NTA made changes to the NEET 2025 Biology syllabus. Biology holds significant weight in this exam, comprising nearly half of the questions. Mastering this subject is essential for improving overall scores. By downloading and familiarizing themselves with the updated NEET 2025 Biology syllabus, students can understand the additions and removals of topics. Understanding the NEET 2025 Biology syllabus helps students categorize topics based on their importance and prepare accordingly for the exam.
| NEET Syllabus 2025 for Physics and Chemistry | |
| NEET Physics Syllabus 2025 | NEET Chemistry Syllabus 2025 |
NEET Biology Syllabus 2025 Overview
The NEET Biology syllabus 2025 comprises two branches: Botany and Zoology. Botany focuses on studying plant life, while Zoology deals with animal biology. The NEET 2025 Biology syllabus is designed to assess candidates on the topics covered in Class 11 and Class 12 of their school curriculum. It is important to be aware of the scope of the concepts that need to be studied to prepare effectively for the Biology section of the exam. The Biology syllabus for NEET 2025 is extensive, covering a wide range of topics. Therefore, it’s crucial to thoroughly understand and review the NEET 2025 Biology syllabus.
Do Check: NEET 2025 Exam Date
| Parameter | Details |
| Official Release | 2025 |
| Authority | National Testing Agency (NTA) |
| Syllabus Availability | Available on NTA’s official website |
| Document Format | |
| Key Sections | Physics, Chemistry, Biology |
| Changes from the Previous Year | Yes (Specified in the revised sections) |
| Accessibility | NEET 2025 syllabus PDF by NTA is available |
| Applicability | Mandatory for NEET 2025 aspirants |
NEET Biology Syllabus 2025 For Class 11
The NEET Biology Syllabus 2025 for Class 11 is crucial for preparing for the National Eligibility cum Entrance Test (NEET). It outlines the topics and subtopics that Class 11 students should focus on to succeed in the Biology section of the NEET exam. Here's an overview of the NEET Biology syllabus 2025 for Class 11, emphasizing the important areas students should prioritize according to the updated guidelines by NTA.
| Unit Name | Unit Topics |
| Unit 1 – Diversity of Living Organisms | What is living?; Biodiversity; Need for classification; Taxonomy & Systematics; Concept of species and taxonomic hierarchy; Binomial nomenclature; Five kingdom classification: Monera, Protista, Fungi, Lichens, Viruses, and Viroids; Classification of plants: Algae, Bryophytes, Pteridophytes, Gymnosperms; Classification of animals: Non-chordates up to phylum level and chordates up to class level. |
| Unit 2 – Structural Organization in Plants & Animals | Morphology and modifications; Tissues; Anatomy and functions of different parts of flowering plants: Root, stem, leaf, inflorescence (cymose and racemose), flower, fruit, seed; Families: Malvaceae, Cruciferae, Leguminoceae, Compositae, Gramineae; Animal tissues; Anatomy and functions of different systems (digestive, circulatory, respiratory, nervous, reproductive) of an insect (Frog). |
| Unit 3 – Cell Structure and Function | Cell theory; Structure of prokaryotic and eukaryotic cells; Plant and animal cells; Cell envelope, membrane, wall; Cell organelles: Endoplasmic reticulum, Golgi bodies, lysosomes, vacuoles, mitochondria, ribosomes, plastids, microbodies; Cytoskeleton, cilia, flagella, centrioles; Nucleus: nuclear membrane, chromatin, nucleolus; Biomolecules: Proteins, carbohydrates, lipids, nucleic acids; Enzymes; Cell division: Cell cycle, mitosis, meiosis. |
| Unit 4 – Plant Physiology | Photosynthesis: Autotrophic nutrition, site, pigments, phases, pathways, factors; Respiration: Gas exchange, glycolysis, fermentation, TCA cycle, electron transport system, ATP generation, respiratory quotient; Plant growth and development: Seed germination, growth phases, conditions, differentiation, regulators (auxin, gibberellin, cytokinin, ethylene, ABA). |
| Unit 5 – Human Physiology | Breathing and respiration: Respiratory organs, human respiratory system, mechanism, regulation, disorders; Body fluids and circulation: Blood composition, groups, coagulation, lymph, circulatory system, heart, blood vessels, cardiac cycle, ECG, double circulation, disorders; Excretory products and elimination: Modes, human excretory system, urine formation, osmoregulation, regulation, disorders; Locomotion and movement: Types, skeletal muscle, contraction, skeletal system, joints, disorders; Neural control and coordination: Neuron, nerves, human nervous system, nerve impulses; Chemical coordination and regulation: Endocrine glands, hormones, human endocrine system, hormone action, disorders. |
NEET Biology Syllabus 2025 For Class 12
The NEET 2025 Biology Syllabus for Class 12 builds on the foundational concepts from Class 11 and covers advanced topics. It includes subjects like human reproduction, evolution, ecology, biotechnology, genetics, and more. Here’s a detailed look at the updated NEET 2025 biology syllabus for Class 12.
| Unit Name | Unit Topics |
| Unit 6 – Reproduction | Sexual reproduction in flowering plants: Flower structure, gametophytes, pollination, fertilization, seed and fruit development, apomixis, parthenocarpy, polyembryony; Human reproduction: Reproductive systems, gametogenesis, menstrual cycle, embryo development, pregnancy, parturition, lactation; Reproductive health: STD prevention, birth control, contraception, MTP, amniocentesis, infertility, ART. |
| Unit 7 – Genetics & Evolution | Heredity and variation: Mendelian inheritance, deviations, chromosome theory, sex determination, linkage, crossing over, sex-linked inheritance, disorders; Molecular basis of inheritance: DNA/RNA structure, replication, transcription, translation, gene expression, genome, HGP, DNA fingerprinting; Evolution: Origin, biological evolution, Darwin, modern theory, natural selection, genetic drift, Hardy-Weinberg principle, human evolution. |
| Unit 8 – Biology and Human Welfare | Health and disease: Pathogens, diseases, immunology, cancer, HIV/AIDS, drug and alcohol abuse; Microbes in human welfare: Food processing, industrial production, sewage treatment, biocontrol agents, biofertilizers. |
| Unit 9 – Biotechnology and its Applications | Principles and processes: Genetic engineering, recombinant DNA technology; Applications: Health, agriculture, human insulin, vaccines, gene therapy, GM organisms, biosafety, biopiracy, patents. |
| Unit 10 – Ecology and Environment | Organisms and environment: Population interactions, attributes; Ecosystem: Patterns, components, energy flow, pyramids; Biodiversity and conservation: Concept, patterns, importance, loss, conservation strategies, hotspots, endangered organisms, Red Data Book, biosphere reserves, national parks, sanctuaries, sacred groves. |
NEET 2025 Biology Syllabus For Botany
The NEET Botany syllabus 2025 covers various topics related to plant studies, divided into four main sections: biochemistry, cell biology, genetics, and ecology.
Also Check: NEET 2025 Eligibility Criteria
| Chapter Name |
| Cell – The Unit of Life |
| Cell Cycle and Cell Division |
| The Living World |
| Biological Classification |
| Plant Kingdom |
| Morphology of Flowering Plants |
| Anatomy of Flowering Plants |
| Photosynthesis in Higher Plants |
| Respiration in Plants |
| Plant Growth and Development |
| Sexual Reproduction in Flowering Plants |
| Principle of Inheritance and Variation |
| Molecular Basis of Inheritance |
| Microbes in Human Welfare |
| Organisms and Population |
| Ecosystem |
| Biodiversity and Conservation |
NEET 2025 Biology Syllabus For Zoology
The NEET Zoology syllabus 2025 assesses candidates’ understanding of zoology, including animal classification, structural organization, cell biology, and human physiology.
| Chapter Name |
| Structural Organization in Animals (including Frog) |
| Biomolecules |
| Breathing and Exchange of Gases |
| Body Fluids and Circulation |
| Excretory Products & their Elimination |
| Locomotion & Movement |
| Neural Control & Coordination |
| Chemical Coordination & Integration |
| Animal Kingdom |
| Human Reproduction |
| Reproductive Health |
| Evolution |
| Human Health and Diseases |
| Biotechnology: Principles & Processes |
NEET Biology Syllabus 2025 Weightage
Before beginning their preparation, candidates should become familiar with the NEET Biology chapter-wise weightage distribution for the NEET Biology Syllabus 2025. Understanding the weightage will help prioritize topics that carry more marks. The table below summarizes the marks assigned to each chapter in the NEET 2025 Biology Syllabus, which is essential for effective study planning.
Do Check: NEET 2025 Exam Pattern
Zoology
| Chapter/Topic | Average No. of Questions (5 Years) | Weightage (%) |
| Structural Organisation in Animals | 4 | 8% |
| Locomotion and Movement | 3 | 6% |
| Body Fluids and Circulation | 2 | 5% |
| Evolution | 3 | 6% |
| Biomolecules | 5 | 10% |
| Human Reproduction | 3 | 6% |
| Breathing and Exchange of Gases | 2 | 4% |
| Excretory Products and their Elimination | 2 | 5% |
| Reproductive Health | 4 | 8% |
| Biotechnology – Principles and Processes | 6 | 12% |
| Human Health and Disease | 3 | 6% |
| Biotechnology and its Applications | 4 | 7% |
| Animal Kingdom | 7 | 13% |
| Neural Control and Coordination | 1 | 2% |
| Chemical Coordination and Integration | 2 | 4% |
Botany
| Chapter/Topic | Average No. of Questions (5 Years) | Weightage (%) |
| Biodiversity and Conservation | 2 | 4% |
| Anatomy of Flowering Plants | 3 | 7% |
| Cell: The Unit of Life | 2 | 5% |
| Respiration in Plants | 2 | 4% |
| Microbes in Human Welfare | 2 | 4% |
| Cell Cycle and Cell Division | 4 | 9% |
| Molecular Basis of Inheritance | 6 | 14% |
| Principles of Inheritance and Variation | 5 | 10% |
| Sexual Reproduction in Flowering Plants | 3 | 6% |
| Ecosystem | 2 | 4% |
| Morphology of Flowering Plants | 3 | 6% |
| Plant Growth and Development | 3 | 6% |
| The Living World | 0 | 1% |
| Plant Kingdom | 3 | 7% |
| Biological Classification | 1 | 3% |
| Organisms and Populations | 2 | 4% |
| Photosynthesis in Higher Plants | 2 | 4% |
NEET Biology Syllabus 2025 Important Topics
Candidates should focus on key biology concepts when preparing for the Biology syllabus for NEET 2025. Prioritizing essential topics in the NEET 2025 Biology Syllabus for both Botany and Zoology will improve study efficiency and exam performance.
NEET Botany Syllabus 2025 Important Topics
For NEET Botany Syllabus 2025, focus on these frequently asked topics to enhance your preparation:
| Chapter Name | Chapter Topics |
| Cell – The Unit of Life | CELL THEORY, AN OVERVIEW OF CELL, PROKARYOTIC CELLS, EUKARYOTIC CELLS |
| Cell Cycle and Cell Division | CELL CYCLE, Phases of Cell Cycle, Significance of Mitosis, MEIOSIS I & II, Significance of Meiosis |
| The Living World | WHAT IS ‘LIVING’?, DIVERSITY IN THE LIVING WORLD, Binomial nomenclature, TAXONOMIC CATEGORIES |
| Biological Classification | Types of Classification, KINGDOM MONERA, KINGDOM PROTISTA, KINGDOM FUNGI, KINGDOM PLANTAE, KINGDOM ANIMALIA, acellular organisms, Symbiotic organisms |
| Plant Kingdom | Classification system, Taxonomy, ALGAE, BRYOPHYTES, PTERIDOPHYTES, GYMNOSPERMS |
| Morphology of Flowering Plants | THE ROOT, THE STEM, THE LEAF, THE FLOWER, THE FRUIT, THE SEED, SEMI-TECHNICAL DESCRIPTION OF A TYPICAL FLOWERING PLANT, DESCRIPTION OF SOME IMPORTANT FAMILIES |
| Anatomy of Flowering Plants | THE TISSUES, Simple Tissues, Complex Tissues, THE TISSUE SYSTEM, Anatomy of Plants |
| Photosynthesis in Higher Plants | EARLY EXPERIMENTS, WHERE DOES PHOTOSYNTHESIS TAKE PLACE?, HOW MANY TYPES OF PIGMENTS ARE INVOLVED IN PHOTOSYNTHESIS?, WHAT IS LIGHT REACTION?, Dark Reaction, THE C4 PATHWAY, PHOTORESPIRATION, FACTORS AFFECTING PHOTOSYNTHESIS |
| Respiration in Plants | RESPIRATION IN PLANTS, GLYCOLYSIS, FERMENTATION, AEROBIC RESPIRATION, THE RESPIRATORY BALANCE SHEET, AMPHIBOLIC PATHWAY, RESPIRATORY QUOTIENT |
| Plant Growth and Development | GROWTH, Growth Rates, DIFFERENTIATION, DEDIFFERENTIATION AND REDIFFERENTIATION, DEVELOPMENT, PLANT GROWTH REGULATORS |
| Sexual Reproduction in Flowering Plants | FLOWER – A FASCINATING ORGAN OF ANGIOSPERMS, PRE-FERTILISATION: STRUCTURES AND EVENTS, Pollen grain, Female gametophyte, Pollination, POST-FERTILISATION: STRUCTURES AND EVENTS, Embryo, Seed, Fruit, APOMIXIS AND POLYEMBRYONY |
| Principles of Inheritance and Variation | Genetics, MENDEL’S LAWS OF INHERITANCE, INHERITANCE OF ONE GENE, INHERITANCE OF TWO GENES, POLYGENIC INHERITANCE, PLEIOTROPY, SEX DETERMINATION, MUTATION, GENETIC DISORDERS, Mendelian Disorders, Chromosomal Disorders |
| Molecular Basis of Inheritance | THE DNA, THE SEARCH FOR GENETIC MATERIAL, RNA WORLD, THE DNA, DNA Replication, TRANSCRIPTION, GENETIC CODE, RNA– the Adapter Molecule, TRANSLATION, REGULATION OF GENE EXPRESSION, HUMAN GENOME PROJECT, DNA FINGERPRINTING |
| Microbes in Human Welfare | MICROBES IN HUMAN WELFARE, MICROBES IN SEWAGE TREATMENT, MICROBES IN PRODUCTION OF BIOGAS, MICROBES AS BIOCONTROL AGENTS, MICROBES AS BIOFERTILISERS |
| Organisms and Population | ORGANISM AND ITS ENVIRONMENT, POPULATIONS, Population Growth, Life History Variation, Population Interactions |
| Ecosystem | ECOSYSTEM – STRUCTURE AND FUNCTION, ENERGY FLOW, ECOLOGICAL PYRAMIDS |
| Biodiversity and Conservation | BIODIVERSITY, Patterns of Biodiversity, Loss of Biodiversity, BIODIVERSITY CONSERVATION, Why Should We Conserve Biodiversity?, BIODIVERSITY CONSERVATION |
NEET Zoology Syllabus 2025 Important Topics
For NEET Zoology Syllabus 2025, focus on these crucial topics to enhance your preparation:
| Chapter Name | Chapter Topics |
| Structural Organization in Animals | Tissues, Epithelium Tissue, Cell Junctions, Connective Tissue, Muscular Tissue, Nervous Tissue, Cockroach, Frog |
| Biomolecules | Method to analyze chemical composition, Metabolites, Micromolecules, Macromolecules, Carbohydrates, Amino acids, Proteins, Lipids, Nucleic acids, RNA, DNA, Dynamic state of body constituents, The living state, Enzymes |
| Breathing and Exchange of Gases | Introduction to breathing and respiration, Respiratory organs, Human respiratory system, Mechanism of breathing, Respiratory volumes and capacities, Exchange of gases, Transportation of gases, Regulation of respiration, Disorders of Respiratory System |
| Body Fluids and Circulation | Introduction to body fluids, Blood, Plasma, Formed elements, Blood Groups, Coagulation of Blood, Lymph, Circulatory Pathways, Double Circulation, Coronary Circulation, Human Circulatory System, Heart Sounds, Blood Vessels, Portal system, ECG, Regulation of Cardiac Activity, Disorders of Circulatory System |
| Excretory Products & their Elimination | Excretion, Excretory Products, Excretory Structures, Human Excretory System, Nephron, Mechanism of Urine formation, Mechanism of Concentration of the Filtrate, Micturition, Urine, Role of Other Organs in Excretion, Regulation of Kidney Function – Kidney, Regulation of Kidney Function – Hypothalamus, Regulation of Kidney Function – Adrenal cortex, Regulation of Kidney Function – Adrenal medulla, Regulation of Kidney Function – Heart, Regulation of GFR, Disorders of the Excretory System, Treatment for renal failure |
| Locomotion & Movement | Locomotion and movement, Locomotory organs, Types of Movement, Muscles, Types of Muscle, Skeletal muscles, Structure of contractile proteins, Mechanism of Muscle Contraction, Mechanism of Muscle Relaxation, Red & White Muscles, Skeletal system, Axial skeleton, Appendicular skeleton, Joints, Disorders related to muscular system |
| Neural Control & Coordination | Control and coordination, Neural system, Human neural system, Neuron, Generation and conduction of nerve impulse, Transmission of Impulses, Synapse, Neurotransmitters, Central nervous system(CNS), Human Brain, Spinal cord |
| Chemical Coordination & Integration | Neural system and Endocrine system, Endocrine glands, Hormones, Hypothalamus, Pituitary gland/Hypophysis, Pineal gland/body, Thyroid gland, Parathyroid gland, Thymus gland, Adrenal gland, Pancreas, Gonads, Hormones of Gastrointestinal Tract, Hormones of Heart, Hormones of Kidney, Non-endocrine tissues, Hormonal Feedback, Hormonal action |
| Animal Kingdom | Taxonomy, Kingdom-Animalia, Basis of Classification, Phylum- Porifera, Phylum- Coelenterata/Cnidaria, Phylum- Ctenophora, Phylum- Platyhelminthes, Phylum- Aschelminthes/ Nemathelminthes, Phylum-Annelida, Phylum-Arthropoda, Phylum- Mollusca, Phylum- Echinodermata, Phylum- Hemichordata, Phylum-Chordata, Subphyla- Urochordata, Subphyla- Cephalochordata, Subphyla- Vertebrata, Class- Cyclostomata, Superclass- Pisces (Class- Chondrichthyes), Superclass- Pisces (Class- Osteichthyes), Superclass- Tetrapoda (Class – Amphibia), Superclass- Tetrapoda (Class – Reptiles), Superclass- Tetrapoda (Class – Aves), Superclass- Tetrapoda (Class – Mammalia) |
| Human Reproduction | Human reproductive system, Male reproductive system, Female reproductive system, Spermatogenesis, semen, Structure of sperm, Oogenesis, Differences between spermatogenesis and oogenesis, Ovum, Menstrual cycle, Fertilisation & Implantation, Sex Determination of Foetus, Pregnancy & embryonic development, Parturition & Lactation |
| Reproductive Health | Reproductive health, Population, Contraceptive methods, Medical termination of pregnancy, Sexually transmitted diseases(STDs), Infertility, Assisted reproductive technologies(ARTs) |
| Evolution | Origin of life, Theory of origin of life, Evolution, Evidences of evolution, Adaptive radiation, Natural selection and artificial selection, Theory of organic evolution, Hardy-weinberg principle, Speciation and isolation, A brief account on evolution, Origin and evolution of man |
| Human Health and Diseases | Introduction, Common Diseases in Humans, Protozoan Disease, Immunity, Innate immunity, Acquired immunity, Lymphoid organs, Immunization, Vaccination, Transplantation, Auto-immunity, AIDS, Cancer, Drug abuse, Alcohol abuse, Adolescence, Addiction and dependence |
| Biotechnology: Principles & Processes | Principles of biotechnology, Genetic engineering/Recombinant DNA technology, Tools of rDNA technology, Isolation of DNA, Separation and isolation of DNA fragments, Amplification of gene of interest, Insertion of rDNA into host cell, Obtaining the foreign gene product, GMOs, Biotechnological applications in agriculture, Biotechnological applications in medicine, Transgenic animals, Ethical issues |
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Frequently Asked Questions on NEET 2025 Biology Syllabus
As the NTA made several changes to the syllabus in October, it's uncertain if there will be more changes for the NEET 2025 Biology syllabus. Keep an eye on official announcements for any updates on the NEET 2025 biology syllabus.
For NEET 2025, the Biology syllabus includes 17 chapters in Botany and 14 chapters in Zoology. The NEET 2025 Biology Syllabus for Class 11 and the NEET 2025 Biology Syllabus for Class 12 will be crucial for your preparation.
To prepare for NEET 2025, start by thoroughly understanding the updated NEET 2025 biology syllabus. Focus on mastering key concepts in the NEET 2025 Biology Syllabus for Botany and the NEET 2025 Biology Syllabus for Zoology, as well as Chemistry and Physics. Regular practice with mock tests and previous years' papers will help gauge your preparation level.
It's hard to predict the difficulty level of NEET 2025 in advance. However, a strong grasp of the NEET 2025 Biology syllabus and consistent preparation can help you manage any challenges effectively.
Yes, NCERT books are essential for NEET 2025 preparation. However, it's recommended to supplement them with additional study materials and practice tests to cover the NEET Biology Syllabus 2025 comprehensively, including the NEET Biology Syllabus 2025 For Class 11 and NEET Biology Syllabus 2025 For Class 12.