NEET Biology Syllabus 2020 (Chapter Wise)

Read here the detailed syllabus of Biology for NEET 2020 exam.

By Mohit ChauhanUpdated : Aug 5, 2020 , 14:33 IST
NEET Biology Syllabus 2020 (Chapter Wise)

NEET Biology Syllabus 2020: The Biology section of NEET 2020 exam is divided into Botany and Zoology, each having 45 questions to attempt. This section is usually the easiest of the three subjects. The best approach for the Biology section of the NEET exam is to adopt smart work along with dedication and diligence. 

The Medical Council of India (MCI) recommended the syllabus for National Eligibility Entrance Test (NEET) for admission to MBBS/BDS/BHMS/BAMS/BUMS courses across the country.  The highly competitive NEET UG exam 2020 is conducted by National Testing Agency (NTA). NEET Syllabus consists mainly of three sections, which are Physics, Chemistry, and Biology.

To upgrade the NEET 2020 preparation & score more marks in NEET 2020 Exam, consider the syllabus of the subjects before starting with your preparation. We are sharing the Chapter-wise NEET Syllabus for Biology which carries a total weightage of 50 Percent (360 marks).

NEET Biology Syllabus 2020 

Below is the class-wise NEET Biology syllabus 2020. Make sure you follow the official syllabus which is listed below while preparing for the upcoming NEET 2020 exam:

NEET 2020 Biology Syllabus from Class XI

UNIT I: Diversity in Living World

  • What is living? Biodiversity; Need for classification; Three domains of life; Taxonomy & Systematics; Concept of species and taxonomical hierarchy; Binomial nomenclature; Tools for study of Taxonomy – Museums, Zoos, Herbaria, Botanical gardens.
  • Five kingdom classification; 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 and Angiosperms (three to five salient and
    distinguishing features and at least two examples of each category); Angiosperms classification up to class, characteristic features and examples).
  • 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

UNIT II: Structural Organisation in Animals and Plants

  • Morphology and modifications; Tissues; Anatomy and functions of different parts of flowering plants: Root, stem, leaf, inflorescence- cymose and racemose, flower,
    fruit and seed (To be dealt along with the relevant practical of the Practical Syllabus).
  • Animal tissues; Morphology, Anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of an insect (cockroach). (Brief account only)

UNIT III: 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, microbodies;
  • Cytoskeleton, cilia, flagella, 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.

B Cell Division:

  • Cell cycle, mitosis, meiosis and their significance.

UNIT IV: Plant Physiology

Transport in plants:

  • Movement of water, gases and nutrients;
  • Cell to cell transport-Diffusion, facilitated diffusion, active transport;
  • Plant – water relations –Imbibition, water potential, osmosis, plasmolysis;
  • Long-distance transport of water– Absorption, apoplast, symplast, transpiration pull, root pressure and guttation;
  • Transpiration Opening and closing of stomata;
  • Uptake and translocation of mineral nutrients-Transport of food, phloem transport, Mass flow hypothesis;
    Diffusion of gases (brief mention).

Mineral nutrition:

  • Essential minerals, macro and micronutrients and their role;
  • Deficiency symptoms; Mineral toxicity;
  • Elementary idea of Hydroponics as a method to study mineral nutrition;
  • Nitrogen metabolism-Nitrogen cycle, biological
    nitrogen fixation.


  • Photosynthesis as a means of Autotrophic nutrition;
  • Site of photosynthesis take 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.


  • 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
  • Sequence of developmental process in a plant cell;
  • Growth regulators-auxin, gibberellin, cytokinin, ethylene, ABA;
  • Seed dormancy;
  • Vernalisation

UNIT IV: Human Physiology

Digestion and Absorption

  • Alimentary canal and digestive glands;
  • Role of digestive enzymes and gastrointestinal hormones;
  • Peristalsis, digestion, absorption and assimilation of proteins, carbohydrates and fats;
  • Caloric value of proteins, carbohydrates and fats;
  • Egestion; Nutritional and digestive disorders – PEM, indigestion, constipation, vomiting, jaundice, diarrhoea.

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 the 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 the 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 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 humans central nervous system, peripheral nervous system and visceral nervous system;
  • Generation and conduction of nerve impulse;
  • Reflex action;
  • Sense organs;
  • Elementary structure and function of eye and ear.

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, goitre, exophthalmic goitre, diabetes, Addison’s disease). (Imp: Diseases and disorders mentioned above to be dealt in brief.)

NEET 2020 Biology Syllabus from Class XII

UNIT I: Reproduction

Reproduction in Organisms:

  • Reproduction, a characteristic feature of all organisms for continuation of species;
  • Modes of reproduction – Asexual and Sexual;
  • Asexual Reproduction;
  • Modes-Binary fission, sporulation, budding, gemmule, fragmentation;
  • Vegetative Propagation in plants.

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 II: 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, honeybee;
  • 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.


  • Origin of life;
  • Biological evolution and evidence for biological evolution from Palaeontology, 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 III: Biology and Human Welfare

  • Health and Disease; Pathogens; parasites causing human diseases (Malaria, Filariasis, Ascariasis. Typhoid, Pneumonia, common cold, amoebiasis, ringworm); Basic concepts of immunology-vaccines; Cancer, HIV and AIDS; Adolescence, drug and alcohol abuse.
  • Improvement in food production; Plant breeding, tissue culture, single-cell protein, Biofortification; Apiculture and Animal husbandry.
  • Microbes in human welfare: In household food processing, industrial production, sewage treatment, energy generation and as biocontrol agents and biofertilizers.

UNIT IV: 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, gene therapy; Genetically modified organisms-Bt crops; Transgenic Animals; Biosafety issues-Biopiracy and patents.

UNIT V: Ecology and Environment

Organisms and Environment:

  • Habitat and niche;
  • Population and ecological adaptations;
  • Population interactions-mutualism, competition, predation, parasitism; Population attributes-growth, birth rate and death rate, age distribution.


  • Patterns, components;
  • Productivity and decomposition;
  • Energy flow;
  • Pyramids of number, biomass, energy;
  • Nutrient cycling (carbon and phosphorous);
  • Ecological succession;
  • Ecological Services-Carbon fixation, pollination, oxygen release.

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.

Environmental Issues:

  • Air pollution and its control;
  • Water pollution and its control;
  • Agrochemicals and their effects;
  • Solid waste management;
  • Radioactive waste management;
  • Greenhouse effect and global warming;
  • Ozone depletion;
  • Deforestation; Any three case studies as success stories addressing environmental issues.

 Best Books for NEET Biology



Objective Biology (volumes 1 & 2)

GR Bathla

A Class Book for Botany

A C Dutta

Objective Biology (Volume 1, 2, and 3 along with Practice Papers)

Dinesh Publications

Objective Biology (volumes 1 and 2)

Trueman Publications

Biology Classes 11 and 12 (Volume 1 & 2)

Pradeep Publications

So, here is the Biology chapter-wise syllabus for NEET-UG 2020. It is suggested to get well-versed with the complete syllabus of the exam before starting with your NEET preparation 2020. 

See Also: 

For a detailed study plan for one year to target NEET 2020, click on the link below: 

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 All the Best,
Team Goprep


Class 12thBiology


Mohit Chauhan
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Mohit Chauhan