NEET Biology Syllabus 2026

Biology Unit

Description

Diversity of Living Organisms

What is living, biodiversity, classification, taxonomy, systematics, species concept, taxonomical hierarchy, binomial nomenclature, five kingdom classification, Monera, Protista, Fungi, lichens, viruses, viroids, plant classification (Algae, Bryophytes, Pteridophytes, Gymnosperms), animal classification from non-chordates to chordates

Structural Organization in Plants & Animals

Morphology and anatomy of flowering plants, tissues, root, stem, leaf, flower, fruit, seed, inflorescence, plant families, animal tissues, morphology and anatomy of frog systems, including digestive, circulatory, respiratory, nervous, and reproductive systems

Cell Structure and Function

Cell theory, prokaryotic and eukaryotic cells, plant and animal cells, cell organelles, endomembrane system, mitochondria, plastids, ribosomes, nucleus, biomolecules, proteins, carbohydrates, lipids, nucleic acids, enzymes, cell cycle, mitosis, meiosis, and significance of cell division

Plant Physiology

Photosynthesis, pigments, photochemical and biosynthetic phases, cyclic and non-cyclic photophosphorylation, chemiosmotic hypothesis, photorespiration, C3 and C4 pathways, respiration, glycolysis, TCA cycle, electron transport system, ATP generation, respiratory quotient, plant growth, development, differentiation, and plant growth regulators

Human Physiology

Breathing and respiration, respiratory system, blood and circulation, cardiac cycle, ECG, excretory system, osmoregulation, dialysis, locomotion and movement, muscles and skeletal system, nervous system, neuron and nerve impulse, endocrine glands, hormones, hormonal disorders, and regulation mechanisms

Reproduction

Sexual reproduction in flowering plants, gametophytes, pollination, fertilization, embryo and seed development, apomixis, human reproductive systems, gametogenesis, menstrual cycle, fertilization, pregnancy, reproductive health, contraception, MTP, infertility, IVF, ZIFT, and GIFT

Genetics and Evolution

Mendelian inheritance, dominance, blood groups, polygenic inheritance, chromosome theory, sex determination, linkage, crossing over, sex-linked inheritance, chromosomal disorders, DNA and RNA structure, DNA replication, transcription, translation, Lac operon, human genome project, DNA fingerprinting, evolution, natural selection, Hardy-Weinberg principle, adaptive radiation, and human evolution

Biology and Human Welfare

Human health and diseases, pathogens, malaria, typhoid, pneumonia, dengue, AIDS, cancer, immunity, vaccines, adolescence, drug and alcohol abuse, tobacco abuse, and welfare concepts related to human health

Biotechnology and Its Applications

Principles of biotechnology, recombinant DNA technology, genetic engineering, human insulin production, vaccines, gene therapy, genetically modified crops, transgenic animals, biosafety issues, biopiracy, and patents

Ecology and Environment

Organisms and environment, population interactions, mutualism, competition, predation, ecosystem structure and function, productivity, decomposition, energy flow, ecological pyramids, biodiversity, biodiversity conservation, hotspots, endangered species, national parks, sanctuaries, biosphere reserves, and sacred groves

NEET Biology Syllabus 2026 Weightage

Chapters/Topics

Average No. of Questions Based on 5-Year Analysis

Weightage (%)

NEET Chapter-Wise Weightage 2026 for Zoology

Structural Organisation in Animals (Animal Tissues)

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%

NEET Chapter-Wise Weightage 2026 for Botany

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%

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