NEET 2025 BIOLOGY SYLLABUS
NATIONAL LEVEL OFFLINE TEST
NEET Biology Syllabus 2023 includes 5 units each from the Class 11 & 12 NCERT syllabus.NEET 2023 Syllabus for Biology is further divided into Zoology and Botany syllabus. NEET Biology holds the maximum weightage of 50% in the paper- 100 MCQs (50 each from Zoology & Botany). Candidates can download NEET 2023 Biology Syllabus PDF from the link provided below.
Topics with maximum weightage in NEET 2023 Zoology Syllabus include human physiology, biomolecules, biology & human welfare, human health & disease, and reproduction. NEET 2023 Botany Syllabus includes important topics like cell structure & function, plant physiology, sexual reproduction in plants, environment & ecology, genetics and evolution. Based on previous year’s paper analysis, the difficulty level of NEET biology paper is moderate to difficult. Check NEET Paper Analysis
Based on the new NEET Biology 2023 Exam Pattern, each of Zoology and Botany papers will have 2 sections i.e. A and B in the paper.The sections will have 35 and 15 questions respectively. As per the marking scheme for NEET 2023, for every correct answer, you will score 4 marks whereas for a wrong answer, you will lose 1 mark. Biology has a lot of definitions and scientific terms that need to be prepared and regular revision is required for better performance in the exam. Download NEET Question Papers
Download NEET 2023 Biology Syllabus PDF |
Total weightage | 50% of NEET Syllabus |
Subcategory | Botany and Zoology |
Number of questions asked | From both subjects, Section A: 35, Section B: 15 (attempt only 10 from sec B) |
Marks allotted for each question | 4 marks for correct answer |
Negative marking | 1 mark will be reduced for wrong answer |
Total marks for Biology | 360 out of 720 marks |
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Biology Class 11 Syllabus for NEET 2023 broadly includes 5 units. The table below enlists all the units along with the weightage in the exam based on previous year’s data:
NEET Biology syllabus of Class 11th | weightage |
---|---|
Unit I - Diversity in Living World | 9% |
Unit II- Structural Organisation in Animals and Plants | 9% |
Unit III- Cell Structure and Function | 15% |
Unit IV- Plant Physiology | 17% |
Unit V- Human physiology | 28% |
Unit | Syllabus |
---|---|
Unit 1 – 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 ( salient features and examples). |
UNIT 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 • Animal tissues; Morphology, anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of an insect (cockroach). (Brief account only) |
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; 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 4 – 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 • 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: 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; Seed dormancy; Vernalisation; Photoperiodism. |
Unit 5 – 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 the 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, flagella, 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) |
NEET Biology Class 12 Syllabus broadly includes 5 units. The table below enlists all the units along with the weightage in the exam based on previous year’s data:
NEET Biology Syllabus Class 12th | Weightage |
---|---|
Unit I – Reproduction | 14% |
Unit II – Genetics and Evolution | 7% |
Unit III – Biology and Human Welfare | 18% |
Unit IV – Biotechnology and its Applications | 12% |
Unit V – Ecology and Environment | 19% |
Units | Syllabus |
---|---|
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 |
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, 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. • 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 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. • Ecosystem: 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 warning; Ozone depletion; Deforestation; Any three case studies as success stories addressing environmental issues. |
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NEET will consist of a total 90 questions out of which half of the questions will be asked from Botany and other half for Zoology. Candidates can go through the table given below and get acquainted with the weightage of each topic.
Botany: Topics like plant physiology, cell structure have higher weightage than others given below is a complete list of topics considered important for the exam along with weightage.
NEET Botany Topics | Number of Questions | Marks allocated | |
---|---|---|---|
Class 11th - Botany Topics | |||
Diversity in Living World | 4 | 16 | |
Living World | 1 | 4 | |
Plant Kingdom | 1 | 4 | |
Biological classification | 2 | 8 | |
Structural Organisation in Animals & Plants | 4 | 16 | |
Anatomy of Flowering Plant | 3 | 12 | |
Morphology in flowering plants | 1 | 4 | |
Cell Structure & Function | 7 | 28 | |
Cell Cycle and Division | 2 | 8 | |
Cell: The unit of life | 5 | 20 | |
Plant Physiology | 8 | 32 | |
Mineral Nutrition | 1 | 4 | |
Plant Growth and Development | 2 | 8 | |
Respiration in Plants | 2 | 8 | |
Transport in Plants | 3 | 12 | |
NEET Botany Questions & Weightage from Class 11th | 23 | 92 | |
Sexual Reproduction in flowering Plants | 4 | 16 | |
Genetics & Evolution | 10 | 40 | |
Principles of Inheritance and variation | 7 | 28 | |
Molecular basis of inheritance | 3 | 12 | |
Microbes in Human Welfare | 1 | 4 | |
Ecology & Environment | 9 | 36 | |
Biodiversity and Conservation | 3 | 12 | |
Ecosystem | 1 | 4 | |
Environmental Issues | 4 | 16 | |
Organisms and Population | 1 | 4 | |
NEET Botany Questions & Weightage from Class 12th | 24 | 96 | |
NEET Botany Questions & Weightage from Class 11th and 12th | 47 | 188 |
Zoology: Topics like human physiology, Reproduction and biology & human welfare have more weightage in the exam, aspirants can go through the table given below to know important topics for Zoology in NEET
NEET Zoology Topics | Number of Questions | Marks Allocated | |
---|---|---|---|
Class 11th - Zoology Chapters | |||
Animal Kingdom | 2 | 8 | |
Structural Organisation in Animal | 2 | 8 | |
Biomolecules | 4 | 16 | |
Breathing and exchange of gases | 1 | 4 | |
Human Physiology | 12 | 48 | |
Chemical Coordination | 2 | 8 | |
Digestion and Absorption | 2 | 8 | |
Excretory products and their elimination | 2 | 8 | |
Locomotion and Movement | 2 | 8 | |
Body Fluids and Circulation | 2 | 8 | |
Nervous System | 2 | 8 | |
NEET Zoology Questions & Weightage from Class 11th | 21 | 84 | |
Class 12th - Zoology Chapters | |||
Reproduction | 6 | 24 | |
Human Reproduction | 3 | 12 | |
Reproductive Health | 3 | 12 | |
Evolution | 3 | 12 | |
Biology & Human Welfare | 8 | 32 | |
Human Health and Disease | 4 | 16 | |
Microbes in Human Welfare | 3 | 12 | |
Strategies for Enhancement in Food Production 1 | 1 | 4 | |
Biotechnology | 5 | 20 | |
Biotechnology and its application | 2 | 8 | |
Biotechnology and its processes and principles | 3 | 12 | |
NEET Zoology Questions & Weightage from Class 12th | 22 | 88 | |
NEET Zoology Questions & Weightage from Class 11th& 12th | 43 | 172 |
CheckMobile Apps and Online Resources for Preparing NEET
As per the paper analysis from previous years the difficulty level of the paper is
Section | Number of easy Questions | Number of Moderate Questions | Number of difficult Questions |
---|---|---|---|
Botany | 21 | 17 | 7 |
Zoology | 20 | 19 | 6 |
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NEET 2021 Question Paper | NEET 2020 Question Paper | NEET 2019 Question Paper | NEET 2017 Question Paper |
NEET biology syllabus is totally based on the curriculum of NCERT and going through the NCERT books of class 11th and 12th is very important, but as the competition and difficulty level of the exam is increasing candidates need to get an extra bit of push by preparing with the help of reference books. Given below are the recommended books for NEET biology
Author | Books |
---|---|
Trueman | Biology Vol 1 and Vol 2 |
Ansari | Objective Botany |
Pradeep publications | Pradeep Guide on Biology |
GR Bathla publications | GR Bathla publications for Biology |
MTG Editorial Board | Complete NEET Guide: Biology |
Check:NEET 2022 Books
The questions in Biology are basically based on scientific terms and memory based questions. According to the questions asked in previous years, most of the questions are easy to moderate. This means the candidates can score well with consistent preparation and following a routine. Along with that, the candidate must also follow some tips to prepare strategically to cover all the topics. Some proven tips are mentioned below that can fetch better results for the candidates.
Tip 1: Divide syllabus according to the difficulty: Candidates can divide the sections or topics for preparation based on the difficulty level or number of questions asked from that particular section.
Tip 2: Preparing Notes for Revision:
Tip 3: Practice Papers and Mock Tests:
PracticeNEET Mock Test
Tip 4: Proper Time Management:
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Question: What is the weightage of biology in NEET 2023?
Ans. Biology has 50% weightage in NEET that means 100 out of 200 questions are asked from biology and it is divided into Botany and Zoology which have 50 questions each.
Question: Has the syllabus for biology changed for NEET 2023?
Ans. The syllabus of biology has not changed and it will remain the same for NEET 2023. The syllabus for NEET biology includes 10 units- 5 each from NCERT class 11 and class 12 syllabus.
Question: Which is the most important topic in biology?
Ans. NTA designs the questions in such a way that it covers all the topics uniformly, so, candidates must prepare all the topics in NEET biology syllabus. Based on previous year’s exam analysis, the topics that should not be missed include human physiology, biomolecules, cell structure & function, plant physiology, and genetics and evolution
Question: Does Zoology have more weightage than Botany in NEET Biology?
Ans. Both Zoology and Botany have equal weightage in the exam. There can be a minute diversion in the number of questions asked but that differs from year to year.
Question: Is the class 12th biology syllabus more important than the 11th biology syllabus?
Ans. The weightage of the syllabus is the same for both classes 11th and 12th. So candidates must give importance to topics from both class 11th and 12th syllabus.
Question: Is preparing from NCERT books enough to clear NEET?
Ans. Preparation from NCERT is important because NTA follows the syllabus prescribed by NCERT. But to score better marks candidates need to refer to the advanced syllabus from different reference books.
Question: What are the best books to prepare for NEET biology syllabus?
Ans. There are a lot of reference books available to prepare for NEET biology, some of the most recommended books are
Ans. AIIMS Delhi cutoff for general category students is around 705. Although the cutoff changes each year depending on different factors, try to score above 705, to secure a seat. Keep in mind the required cutoff for AIIMS Delhi stays above 95 percentile irrespective of the category. For the reserved category, the required cutoff score is around 692. Read more
Ans. NEET 2022 total marks are 720 and according to the trends of AIIMS Delhi, the required cutoff for general category students is above 705. If you are scoring above 705, you have a good chance of getting admission to AIIMS Delhi. In order to get admission to Harvard Medical School, you need to have an undergraduate bachelor's degree. In the US, medical schools offer graduate degrees. To increase your chances of getting into Harvard Medical, you can apply to Harvard Undergraduate School first. Get excellent scores throughout your undergraduate, ace MCAT, have special extracurricular interests, and publish original research. Once you are in your fourth year, you can apply to Harvard Medical. Read more
Ans. I know people who used to score around 480 and got admission to AIIMS Delhi. Concept clarity, practice, and consistent hard work can help you score better. AIATS is a good yardstick for judging your preparation, but it doesnât necessarily have to define you. You can use your score to motivate yourself and study more. But AIATS scores arenât the ultimate indicator of your performance on the day. The video will motivate you if you scored less Read more
Ans. As per the trends of last few years, AIIMS Rishikesh cutoff stays around 685+. Generally, the required cutoff increases each year, due to increased competition. So, focus on your preparation and try to score as much as possible in NEET 2022. You heard work and effort will determine your NEET score. Read more
Ans. AIIMS Bhubaneswar NEET cutoff for the last two years was as follows. Category Cutoff 2021 Cutoff 2020 General 78-538 228-569 OBC 610-1254 570-1195 SC 1018-7136 1503-12362 ST 12099-27803 5691-23424 All AIIMS have high closing marks as there is no state reservation. Keep in mind that the required cutoff varies each year depending on different factors. Read more
Ans. LHMC cutoff marks for AIQ is around 667 marks. The cutoffs (general category) for the last three years are as follows. NEET Cutoff Round 2019 (cutoff rank) 2020 (cutoff rank) 2021 (cutoff rank) 1st 333 6329 579 2nd 489 6349 414 The required cutoff usually increases each year based on competition, number of applications, and other such factors. Read more
Ans. Osmania University Hyderabad cutoff for NEET is around 655+. If you are a general category student, try to score above 655, to get admission at Osmania University. The required cutoff usually increased each year based on competition. Naturally, the required cut-off for reserved category students is comparably lower. Read more
Ans. CMC Vellore NEET cut-off 2023 will be released by the concerned bodies soon on the official website. The following table displays the CMC Vellore Expected cutoff for 2023 for MBBS based on NEET UG Christian Medical College Vellore NEET Cutoff 2023 (Expected) Category Opening Rank General 19450 SC 17400 ST 102689 OBC 15030 EWS 15880 PWD 18495 Read more
Ans. One of my friends studies there and he once told me that his dream comes true after getting admission to this institute. He mentioned that there are many things, which are actually looking forward by every student. This institute provides the best clinical posting, Academics, and extracurricular opportunities such as sports and cultural events. The college administration itself organizes some CDE programs and seminars for the betterment of the students. In your third year, you will get the opportunity to work with AIIMS Rishikesh for your studies in General Medicine and General Surgery. My friend has just completed his work experiences in AIIMS, which is really a life-changing knowledge for him considering his future career perspectives. However, the Dental Schools' lack of exposure is a Myth, but this institute works hard to provide its students world-class services and medical equipment. This institute is on the River Ganges banks, which is very relaxing, and the college environment is very soothing and breathtakingly beautiful. My friend has just finished his 3 years in this college, and he mentioned that this institute provides a homely feeling. Teachers are amiable, kind, and helpful. Thus, if you want to take admission to this institute, go for it. Read more
Ans. At NEIGRIHMS Shillong, there are 8 seats for the All India Quota. According to the 2021 statistics, the required cutoff in NEET was 3690-8913. There are also NEIGRIHMS open quota and reserved state quota for Arunachal Pradesh, Meghalaya, Mizoram, Nagaland. The required cutoff for these categories varies each year. Read more
*The article might have information for the previous academic years, which will be updated soon subject to the notification issued by the University/College
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