NEET Biology Syllabus

NEET Biology Syllabus comprises detailed chapter-wise syllabus of class 11 and class 12. Going through the official NEET Syllabus for Biology is extremely important to prepare well. Last year NMC removed some topics or chapters for the NEET examination

1.0Complete Analysis of NEET Biology

ALLEN Experts has provided a detailed analysis of changes in the Biology portion of the NEET exam, including reductions and additions in the exam portion. NTA revised the syllabus last year. In order to achieve high marks in the upcoming NEET exam, this analysis will help you to gain an idea to cover the Biology portion with the updated syllabus.

Related Video:

Analysis of NEET 2024 Biology Syllabus by ALLEN

2.0NEET Biology Syllabus Class 11

The NEET Bio Syllabus comprises a total of 10 chapters. Here, we are providing you with the class-wise deleted topics from the Syllabus of Biology for NEET exam.

Chapter Number

Chapter Name

Topics

1

Diversity in Living World

  • What is living?; Biodiversity; Need for classification;: Taxonomy & Systematics; Concept of species and taxonomic hierarchy; Binomial nomenclature
  • 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 (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 class level (three to five salient features and at least two examples)

2

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) Family (malvaceae, Cruciferae, leguminoceae, compositae, graminae).
  • Animal tissues; Morphology, anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of an insect (Frog). (Brief account only)

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; Cell envelope, cell membrane, cell wall; Cell organelles- structure and function; Endomembrane system-endoplasmic reticulum, Golgi bodies, lysosomes, vacuoles; mitochondria, ribosomes, plastids, micro bodies; Cytoskeleton, cilia, flagella, centrioles (ultra structure 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.

4

Plant Physiology

  • Photosynthesis: 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.
  • 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, dedifferentiation and redifferentiation; Sequence of developmental process in a plant cell; Growth regulators- auxin, gibberellin, cytokinin, ethylene, ABA;

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 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;
  • 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)

3.0NEET Biology Syllabus Class 12

Chapter Number

Chapter Name

Topics

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 upto 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).

7

Genetics and Evolution

  • Heredity and variation: Mendelian Inheritance; Deviations from Mendelism- Incomplete dominance, Codominance, 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, honey bee; 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 evidences 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.

8

Biology and Human Welfare

  • Health and Disease; Pathogens; parasites causing human diseases (Malaria, Filariasis, Ascariasis. Typhoid, Pneumonia, common cold, amoebiasis, ringworm, 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.

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, Genes therapy; Genetically modified :organisms-Bt crops: Transgenic Animals Biosafety issues-Biopiracy; and patents

10

Ecology and Environment

  • Organisms and environment
  • Population interactions-mutualism, competition..predation,
  • Parasitism Population attributes-growth. birth rate and death rate, age distribution.
  • Ecosystem: Pattems, components; productivity and decomposition
  • Energy flow: Pyramids of numbers, 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

4.0List of Topics Deleted from Biology Syllabus

As per the syllabus of Biology for NEET 2024, there are some topics that have been removed from the NEET Biology syllabus. The list of deleted topics is given below in a class-wise manner.

Topics Deleted from NEET Biology Syllabus 2025

Class 11th Deleted Biology Portion

Chapter Number

Chapter Name

Topics

1

Diversity in Living World

  • Three domains of life 
  • Tools for study of Taxonomy – Museums, Zoos, Herbaria, Botanical gardens 
  • Angiosperms, Angiosperms classification up to class, characteristic features and examples

2

Structural Organisation in Animals and Plants

  • Cockroach

3

Cell Structure and Function

  • No Change in Syllabus

4

Plant Physiology

  • Transport in plants
  • Mineral nutrition
  • Plant Growth and Development
  • Vernalisation
  • Photoperiodism

5

Human Physiology

  • Digestion and Absorption

Class 12th Deleted Biology Portion

Chapter Number

Chapter Name

Topics

6

Reproduction

  • Reproduction in Organisms

7

Genetics and Evolution

  • No Change in Syllabus

8

Biology and Human Welfare

  • Improvement in food production
  • Biofortification

9

Biotechnology and its Applications

  • No Change in Syllabus

10

Ecology and Environment

  • Organisms and environment
  • Environmental issues
  • Nutrient cycling
  • Ecological succession & services

5.0Why Is a High Score Obtained in Biology Portion in NEET?

As per the previous year trends of Biology portion for NEET exam, Approximately 70-75% of questions are directly based on NCERT books. These questions make a significant impact on a candidate's overall score in the NEET Bio Portion.

Frequently Asked Questions

A total of 100 questions will be asked in the NEET Biology section. Students are required to attempt only 90 questions. It carries a total of 360 marks.

The Biology Portion for NEET 2025 exam covers 10 Chapters from Botany and Zoology.

According to the NEET 2024 syllabus, there are some topics deleted to the NEET Biology portion last year, which are listed above in this article.

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