NEET UG Biology Syllabus 2025: NEET UG Biology Syllabus is a crucial aspect of NEET preparation. The syllabus has been designed to test the candidates’ knowledge and skills in Biology. Aspiring medical students must thoroughly understand the NEET Biology syllabus to excel in the NEET exam. NEET UG Biology syllabus 2025 will be based on the NCERT curriculum of Class 11 and 12. The syllabus includes both Botany and Zoology, divided into two sections, section A includes Botany, and Section B includes Zoology.
A comprehensive revision of the Class 11 Biology NCERT Book and Class 12 NCERT Biology textbooks is necessary because the NEET Biology syllabus is based on the principles covered in those texts. Throughout this article, you will get complete knowledge about the class, topic, chapter-wise NEET Botany and Zoology syllabus with the topper recommended book etc.
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NEET Syllabus 2025: Quick Fact
Before going into a deep discussion of the NEET Biology syllabus, let’s check some quick facts about the NEET 2025 Syllabus below mention table.
| Particulars | Details |
|---|---|
| Issuing Authority of NEET 2025 Syllabus PDF | NTA (National Testing Agency) |
| Official Website for releasing NEET Syllabus PDF | neet.nta.nic.in |
| Subjects in NEET Syllabus | Chemistry, Physics, Biology (Zoology and Botany) |
| Total Number of Questions in the NEET Exam | 200 |
| No. of Questions from NEET Chemistry Section | 50 |
| No. of Questions from NEET Physics Section | 50 |
| No. of Questions from NEET Biology Section | 100 (50 each in Zoology & Botany) |
NEET Syllabus 2025 for Biology
NEET Biology syllabus class 12 covers a wide range of topics, including Reproduction in Plants and Animals, Human Reproduction, Genetics and Evolution, Biotechnology, Ecology, and Environment. On the other hand, the NEET Biology syllabus class 11 covers topics like Cell Structure and Function, Diversity in the Living World, Plant Kingdom and Animal Kingdom, and Structural Organization in Plants and Animals.
| NEET Biology Syllabus 2025 (Class 11) | NEET Biology Syllabus 2025 (Class 12) |
|---|---|
| Diversity in Living World | Reproduction |
| Structural Organization in Animals and Plants | Genetics and Evolution |
| Cell Structure and Function | Biology and Human Welfare |
| Plant Physiology | Biotechnology and Its Applications |
| Human Physiology | Ecology and environment |
Class 11th chapter-wise NEET UG Biology syllabus
Below the mention table, we will share class 11th chapter-wise NEET UG Biology syllabus weightage. Let’s look:
| Unit | Description (Topic) |
|---|---|
| Unit 1 – Diversity in Living World | Biodiversity; Need for classification; Taxonomy & Systematics; Concept of species and taxonomic hierarchy; Binomial nomenclature; Five kingdom classification; Salient features and classification of plants into major groups-Algae, Bryophytes, Pteridophytes, Gymnosperms (three to five salient and distinguishing features and at least two examples of each category); Salient features and classification of animals-nonchordate up to phyla level and chordate up to classes level (three to five salient features and at least two examples). |
| Unit 2 – Structural Organisation in | Morphology and modifications; Tissues; Anatomy and functions of different parts of flowering plants; Root, stem, leaf, inflorescence cymose and racemose, flower, fruit and seed. Animal tissues; Morphology (Morphology of Flowering Plants), anatomy and functions of different systems |
| Unit 3 – 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; Endomembrane system-endoplasmic reticulum, Golgi bodies, lysosomes, vacuoles; mitochondria, ribosomes, plastids, micro bodies; Cytoskeleton, cilia, flagella, centrioles Chemical constituents of living cells: B Cell division: Cell cycle, mitosis, meiosis and their significance. |
| Unit 4 – Plant Physiology | Photosynthesis: Autotrophic nutrition; Site of photosynthesis take place; pigments involved in Photosynthesis (Elementary idea); Photochemical and biosynthetic phases; Cyclic and noncyclic 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 and redifferentiation; Sequence of developmental process in a plant cell; Growth regulators auxin, gibberellin, cytokinin, ethylene, ABA; |
| Unit 5 – Human Physiology | Breathing and Respiration: Animals respiratory organs (recall only); Humans respiratory system; Mechanism of breathing and its regulation in humans exchange of gases, transport of gases and regulation of respiration Respiratory volumes; Disorders related to respiration-Asthma, Emphysema, Occupational respiratory disorders. Body fluids and circulation: Blood’s composition, blood groups, blood’s coagulation; Composition of lymph and its function; Human circulatory system structure, 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, Heart failure Excretory products and elimination: Modes of excretion- Ammonotelism, ureotelism, uricotelism; Human excretory system structure and fuction; 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, fiagellar, muscular; Skeletal muscle- contractile proteins and muscle contraction; Skeletal system and its functions Joints; Disorders of muscular and skeletal system-Myasthenia gravis, Tetany, Muscular dystrophy, Arthritis, Osteoporosis, Gout; Neural control and coordination: Neuron and nerves; Nervous system in humanscentral 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. |
NOTE: Learn more about the CBSE NCERT Class 11 Syllabus.
Class 12th chapter-wise NEET Biology syllabus
Below the mention table, we will share class 12th chapter-wise NEET UG Biology syllabus weightage. Let’s look:
| Unit | Description |
|---|---|
| Unit 1 – Reproduction | Reproduction in Organisms; Asexual reproduction; Modes 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 Human Reproduction; Microscopic anatomy of testis and ovary; Gametogenesis-spermatogenesis & oogenesis; Menstrual cycle; Fertilisation, embryo development upto blastocyst formation, implantation; Pregnancy and placenta formation; Parturition; Lactation Reproductive Health: Need for reproductive health and prevention of sexually transmitted diseases (STD); Birth control-Need and Methods, Contraception and Medical Termination of Pregnancy (MTP); Amniocentesis; Infertility and assisted reproductive technologies — IVF, ZIFT, GIFT |
| Unit 2 – Genetics and Evolution | Heredity and variation: Mendelian Inheritance; Chromosome theory of inheritance; Chromosomes and genes; Sex determination-In humans, birds, honey bees; 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; Gene flow and genetic drift; Hardy-Weinberg’s principle; Adaptive Radiation; Human evolution |
| Unit 3 – Biology and Human Welfare | Health and Disease; parasites causing human diseases (Malaria, Filariasis, Ascariasis. Typhoid, Pneumonia, common cold, amoebiasis, ring worm, 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 |
| Unit 4 – Biotechnology and Its Applications | Biotechnology – Principles and Processes: Genetic engineering Application of Biotechnology in health and agriculture: Human insulin and vaccine production, gene therapy; Genetically modified organisms-Bt crops; Transgenic Animals; Biosafety issues piracy and patents |
| Unit 5 – Ecology and environment | Organisms and environment; Population interactions-mutualism, competition, predation, parasitism; Population attributes-growth, birth rate and death rate, age distribution Ecosystem; components; productivity and decomposition; Energy flow; Pyramids of number, biomass, energy Biodiversity and its Conservation; 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. |
NOTE: Learn more about the CBSE NCERT Class 12 Syllabus.
NEET Biology Chapterwise Weightage
Below the mentioned table, we will share class 11th &12th chapter-wise NEET UG Physics syllabus weightage. Let’s look:
| Chapters | Approximate Weightage |
|---|---|
| Diversity of Living Organisms | 12% |
| Structural Organisation in Animals | 9% |
| Cell: Structure and Function | 8% |
| Plant Physiology | 8% |
| Human Physiology | 16% |
| Reproduction | 11% |
| Genetics and Evolution | 13% |
| Biology and Human Welfare | 9% |
| Biotechnology and its Applications | 4% |
| Ecology and Environment | 10% |
NEET UG Biology Important Topics
This table mentions the all important topics of the NEET UG Biology syllabus for class 11th & 12th. Let’s look:
| Biodiversity | Respiration | Diffusion Means of Transport Biology |
| Chordates | Pteridophytes Alternation of Generations | Habitat of Fungi |
| Cell Wall | Algae | Algae and Fungi |
| Taxonomy | Seed Germination | Passive Transport |
| Morphology in Flowering Plants | Plants | Cell Structure and Function |
| Cell Organelles | Bryophytes | Viruses |
| Biological Systems of Classification Branches of Taxonomy (Biological Classification) | Cell Envelopes and Cell Membrane Invagination | Cell Theory and Its Modification |
| Morphology of Root and Its Types | Internal Anatomy Alimentary Canal | Photosynthesis (Photosynthesis in Higher Plants) |
| Taxonomic Aids | Gymnosperms | Pteridophytes |
| Morphology in Flowering Plants | Cytoplasm and Cell Membrane | Cell |
| Nuclear Membrane | Human Digestive System | Kingdom Monera |
| Scientific Names of Plants and Animals | Difference Between Gymnosperms and Angiosperms | Anatomy of Stem |
| Anatomy of Flowering Plants | Cell Wall and Cell Membrane | Nucleolus |
| Chromosome and Chromatids | Peristalsis | Protista |
| Monera | Disorders of the Respiratory System | Cell Organelles |
| Anatomy of Roots | Regulation of Respiration | Contractile Proteins |
| Chromatin | Movement and Locomotion | Kingdom Fungi |
| Human Respiratory System | Breathing and Exchange of Gases | Cell-The Unit of Life |
| Human Heart | Blood and Plasma | Endocrine System Ductless Gland |
| Cilia and Flagella |
Best Book for NEET UG 2025 Biology
Botany and zoology are included in the Biology section, and this section contains a total of 100 questions. Candidates must pay special attention to the biology section because it is worth a maximum of 360 points and carries a high weight. We have included books in the Best Books For NEET Biology list that will help students retain concepts and prepare them for objective questions.
