NEET Zoology Syllabus 2025

Biology NEET Syllabus 2025 Overview

Parameter

Details

Official Release

2025

Authority

National Testing Agency (NTA)

Syllabus Availability

Available on NTA’s official website

Document Format

PDF

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

Unit Name

Unit Topics

Unit 1 – Diversity of Living Organisms Change

• What is living? ; Biodiversity; Need for classification;; Taxonomy & Systematics; Concept of species and taxonomic hierarchy; Binomial nomenclature;

• Five kingdom classifications: salient features and classification of Monera; Protista and Fungi into major groups: Lichens Viruses and Viroids.

• .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 non chordate up to phyla level and chordate up to classes level (three to five salient features and at least two examples)’

Unit 2 – Structural Organization in Plants & Animals Change

• Morphology and modifications; Tissues; Anatomy and functions of different parts of flowering plants: Root, stem, leaf, inflorescence- cymose and racemose, flower’ fruit and seed 1 To be dealt along with the relevant practical of the Practical Syllabus) Family (malvaceae, Cruciferae, leguminoceae, compositae, gramineae)’

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

Unit 3 – Cell Structure and Function No Change

• 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 organelle structure and function; Endomembrane system-endoplasmic reticulum’ Golgi bodies’ lysosomes, vacuoles; mitochondria, ribosomes, plastids, microbodies; Cytoskeleton’ cilia flag”lla centrioles (ultrastructure 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

Unit 4 – 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, differentiation, and redifferentiation; Sequence of developmental process in a plant cell; Growth regulators auxin, gibberellin, cy. cytokinin, ethylene, ABA;

Unit 5 – Human Physiology

• Breathing and Respiration: Respiratory organs in animals (recall only); Respiratory system in humans; 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: 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, 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 (To be dealt with in the relevant practical of practical syllabus); 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 human central nervous system, peripheral nervous system, and visceral nervous system; Generation and conduction of nerve impulses;

• 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).

NEET Biology Syllabus 2025 for Class 12

Unit Name

Unit Topics

Unit 6 – Reproduction

• 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: 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).

• 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 (Elementary idea for general awareness).

Unit 7 – Genetics & Evolution

• Heredity and variation: Mendelian inheritance; Deviations from MendelismIncomplete dominance, Codominance, Multiple alleles, and Inheritance of blood groups, Pleiotropy; Elementary idea of polygenic inheritance; Chromosome theory of inheritance; Chromosomes and genes; Sex determination-i-n humans’ birds, honey bee; Linkage and crossing over; Sex-linked inheritance-Haemophilia color 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 finger printing, 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 Variation (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.

Unit 8 – Biology and Human Welfare

• Health and Disease; Pathogens; 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 9 – Biotechnology and its Applications

• Principles and process of Biotechnology: Genetic engineering (recombinant DNA technology).

• Application of Biotechnology in Health and Agriculture: Human insulin and vaccine production, gens therapy Genetically modified:organisms-Br crops: Transgenic Animals Biosafety issues-Biopiracy and patents.

Unit 10 – Ecology and Environment

• organisms and environment Population intentions-mutualism, competition.predation, parasitism Population attributes-growth. birth rate and death rate, age distribution.

• Ecosystem: Patterns, components; productivity and decomposition: Energy flow: Pyramids of number, biomass. energy

• 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.

NEET 2025 Biology Syllabus For Zoology

S. No

Chapter Name

1

Structural Organization in Animals (including Frog)

2

Biomolecules

3

Breathing and Exchange of Gases

4

Body Fluids and Circulation

5

Excretory Products & their Elimination

6

Locomotion & Movement

7

Neural Control & Coordination

8

Chemical Coordination & Integration

9

Animal Kingdom

10

Human Reproduction

11

Reproductive Health

12

Evolution

13

Human Health and Diseases

14

Biotechnology: Principles & Processes

NEET Biology Syllabus 2025 Weightage

Chapters/Topics

Average No. of Questions Based on 5 Years Analysis

Weightage (%)

NEET Chapter Wise Weightage 2025 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%