IISER Biology Syllabus 2025 (OUT): Check Class 11 and Class 12 NCERT Biology Syllabus Here
Indian Institutes of Science Education and Research Entrance Exam 2026 ( IISER Entrance Exam )
IIISER Entrance Exam 2025 will cover the Biology syllabus from Class 11 and Class 12 NCERT Book. Candidates preparing for the exam should prepare meticulously from the specified IISER Entrance Exam 2025 syllabus. Read this Shiksha article to learn about the detailed IISER 2025 Biology syllabus to score an extra edge in the examination. Also, check out the weightage of Biology questions being asked in the examination.
IISER Entrance Exam 2025 Biology Syllabus
The IISER Aptitude Test 2025 (IAT) is a crucial gateway for students aspiring to join the prestigious Indian Institutes of Science Education and Research (IISERs), IISc Bangalore and IIT Madras. Interested applicants who are inclined towards the life sciences, the Biology section of the IAT 2025 assesses a broad understanding of fundamental biological concepts. This section covers IISER Exam 2025 Biology Syllabus which covers areas such as diversity in the living world, structural organization in plants and animals, cell structure and function, plant and animal physiology, human physiology, reproduction, genetics and evolution, biology and human welfare, biotechnology and its applications, and ecology and environment.
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The syllabus for Biology in IISER 2025 entrance exam is mentioned below- Diversity in the living world. 1. Structural organisation in animals- Animal tissues, organs and organ systems (earthworm, cockroach and frog) 2. Structural organisation in plants- morphology and anatomy of flowering plants. 3. Cell structure and function. 4. Plant and Animal physiology. 5. Human Physiology. 6. Reproduction 7. Genetics and Evolution 8. Biology and human welfare 9. Biotechnology and its applications 10. Ecology and environment.
IISER entrance examination provides admission to candidates in the five-year-long BSMS dual degree programme offered by them. On the basis of a candidates score in the IISER Entrance Exam (also known as IISER aptitude test), he/she can secure admission at IISER located in Berhampur, Bhopal, Kolkata, Mohali, Pune, Thiruvananthapuram, or Tirupati. Since it is an undergraduate degree, the syllabus for the examination is confined to class 11 and 12 subjects which are Physics Chemistry Biology and mathematics. Candidates can find the complete syllabus in the information brochure of the IISER on the official website. For detailed syllabus, candidates can view the below Shiksha link- https://www.shiksha.com/science/iiser-entrance-exam-syllabus.
IISER Entrance Exam 2025 will be conducted on May 25, 2025 at various exam centres across the nation. IAT 2025 application process is underway and candidates can fill out the registration form till April 15, 2025. Candidates are advised to check out the IISER 2025 eligibility criteria meticulously before applying in order to not lose the candidature at any stage of the admission process.
- IISER Aptitude Test Biology Syllabus 2025 Released
- IISER Entrance Exam 2025: Subject Weightage
- Best IISER Aptitude Test Books for Biology
IISER Aptitude Test Biology Syllabus 2025 Released
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For better preparation for the IISER exam, the candidate must review the complete IISER 2025 syllabus as the questions asked will test the candidate's analytic ability. Candidates can find out the detailed IAT Biology syllabus 2025 here in this article. A strong grasp of these topics, typically covered in the Class 11 and 12 NCERT biology curriculum, is essential for success in this section of the IAT.
IISER Biology Syllabus 2025: Class 11
Check out the IAT 2025 Biology syllabus of class 11 NCERT of biology domain from here:
Diversity In the Living World:
- The living world: The Diversity in the living world, Taxonomic categories,
- Biological classification: Kingdoms (Monera, Protista, Fungi, Plantae, and Animalia), Viruses, Viroids and Lichens,
- Plant kingdom: Algae, Bryophytes, Pteridophytes, Gymnosperms, Angiosperms,
- Animal kingdom: Basis of classification of animals and Classification of Animals
Structural Organisation In Plants And Animals:
- Morphology of flowering plants: The Root, The Stem, The Leaf, The Inflorescence, The Flower, The Fruit, The Seed, Semi-technical Description of a Typical, Flowering Plant, Description of Some Important Families,
- Anatomy of flowering plants: The Tissue System, Anatomy of Dicotyledonous and Monocotyledonous Plants
- Structural organisation in animals: Organ and Organ System, Amphibian-Frog
Cell: Structure And Functions:
- Cell: the unit of life: A Cell, The Cell Theory, An Overview of Cell, Prokaryotic Cells, Eukaryotic Cells
- Biomolecules: Analysis of Chemical Composition of organisms, Primary and Secondary Metabolites, Biomacromolecules, Proteins, Polysaccharides, Nucleic Acids, Structure of
Proteins, Enzymes - Cell cycle and cell division: Cell Cycle, Mitosis and Meiosis and its significance
Also Read: IISER 2025 New Changes Introduced: Check for Newly Added Courses, Eligibility, Seat Intake Details
Plant Physiology:
- Photosynthesis in higher plants: Photosynthesis, Early Experiments, Location of photosynthesis, Pigments involved in Photosynthesis, Light Reaction, The Electron Transport, Synthesis and utilization of ATP and NADPH, The C4 Pathway, Photorespiration, Factors Affecting Photosynthesis.
- Respiration in plants: Do Plants Breathe? Glycolysis, Fermentation, Aerobic Respiration, The Respiratory Balance Sheet, Krebs/Citric acid cycle, Respiratory Quotient
- Plant growth and development: Growth, Differentiation, Dedifferentiation and Redifferentiation, Development, Plant Growth Regulators
Human Physiology:
- Breathing and exchange of gases: Respiratory Organs, Mechanism of Breathing, Exchange of Gases, Transport of Gases, Regulation of Respiration, Disorders of Respiratory System
- Body fluids and circulation: Tissue Fluids-Blood, Lymph, Circulatory Pathways, Double Circulation, Regulation of Cardiac Activity, Disorders of Circulatory System
- Excretory products and their elimination: Human Excretory System, Urine Formation, Function of the Tubules, Mechanism of Concentration of the Filtrate, Regulation of Kidney Function, Micturition, Role of other Organs in Excretion, Disorders of the Excretory System.
- Locomotion and movement: Types of Movement, Muscle, Skeletal System, Joints, Disorders of Muscular and Skeletal System
- Neural control and coordination: Neural System, Human Neural System, Neuron as Structural and Functional Unit of Neural System, Central Neural System
- Chemical coordination and integration: Endocrine Glands and Hormones, Human Endocrine System, Hormones of Heart, Kidney and Gastrointestinal Tract, Mechanism of Hormone Action.
Also Read: Courses Offered by IISc Bangalore: Eligibility Criteria & Complete Admission Process
IISER Biology Syllabus 2025: Class 12
Check out the IAT 2025 Biology syllabus of class 12 NCERT of biology domain from here:
Reproduction:
- Sexual reproduction in flowering plants: Flower structure, Angiosperms, Pre-fertilisation: Structures and Events, Double Fertilisation, Post-fertilisation: Structures and Events, Apomixis and Polyembryony
- Human reproduction: The Male Reproductive System, The Female Reproductive System, Gametogenesis, Menstrual Cycle, Fertilisation and Implantation, Pregnancy and Embryonic Development, Parturition and Lactation
- Reproductive health: Reproductive Health – Problems and Strategies, Population Explosion and Birth Control, Medical Termination of Pregnancy, Sexually Transmitted Diseases, Infertility
Genetics And Evolution:
- Principles of inheritance and variation: Mendel’s Laws of Inheritance, Inheritance of One Gene, Inheritance of Two Genes, Sex Determination, Mutation, Genetic Disorders.
- Molecular basis of inheritance: The DNA, The Search for Genetic Material, RNA World, Replication, Transcription, Genetic Code, Translation, Regulation of Gene Expression, Human
Genome Project, DNA Fingerprinting - Evolution: Origin of Life, Evolution of Life Forms – A Theory, Evidence for Evolution, Adaptive Radiation, Biological Evolution, Mechanism of Evolution, Hardy – Weinberg Principle, Evolution, Origin and Evolution of Man
Biology In Human Welfare:
- Human health and disease: Common Diseases in Humans, Immunity, AIDS, Cancer, Drugs and Alcohol Abuse
- Microbes in human welfare: Microbes in Household Products, Microbes in Industrial Products, Microbes in Sewage Treatment, Microbes in Production of Biogas, Microbes as Biocontrol
Agents, Microbes as Biofertilisers
Biotechnology:
- Biotechnology: principles and processes: Principles of Biotechnology, Tools of Recombinant DNA Technology, Processes of Recombinant DNA Technology
- Biotechnology and its application: Biotechnological Applications in Agriculture and Medicine, Transgenic Animals, Ethical Issues
Ecology:
The syllabus for Chemistry in IISER entrance examination includes topics such as,
- Structure of the Atom
- Classification of Elements and Periodicity in Properties
- Chemical Bonding and Molecular Structure
- States of Matter Thermodynamics Equilibrium
- Redox Reactions Hydrogen
- The s-block Elements
- The p-Block Elements
- Organic Chemistry Some Basic Principles and Techniques
- Hydrocarbons
- Environmental Chemistry
- The solid state
- Solutions
- Electrochemistry
- Chemical Kinetics
- Surface Chemistry
- General principles and processes of isolation of elements
- The d and f block elements
- Coordination Compounds
- Haloalkanes and haloarenes
- Alcohols, phenols and ether
- Aldehydes
- Ketones and carboxylic acids
- Organic compounds containing nitrogen, Biomolecules Polymers
- Chemistry in everyday life.
- Organisms and populations: Populations, Logistic growth, Population interactions
- Ecosystem: Ecosystem–Structure and Function, Productivity, Decomposition, Energy Flow, Ecological Pyramids
- Biodiversity and conservation: Biodiversity and Biodiversity conservation
IISER Entrance Exam 2025: Subject Weightage
The IISER Entrance Exam Marking Scheme and subject weightage is as follows:
| Subject |
No. of Questions |
Marks |
|---|---|---|
| Physics |
15 |
60 |
| Chemistry |
15 |
60 |
| Biology |
15 |
60 |
| Mathematics |
15 |
60 |
| Total |
60 |
240 |
Marking scheme: Candidates will be awarded three marks for each correct answer. There will be negative marking of one mark for each incorrect answer.
Also Read: IISER Entrance Exam 2025 Pattern: Section-wise Paper Pattern, Marking Scheme
Best IISER Aptitude Test Books for Biology
The best Biology books for IISER Aptitude Test are listed in the table below.
| Books |
Authors |
|---|---|
| Objective Biology Volume I & II |
Trueman’s |
| Objective NCERT at Your Fingertips |
MTG Editorial Board |
| NCERT Biology Book for Class 12 |
NCERT |
| Master The NCERT for NEET 11 & 12 Biology |
Sanjay Sharma |
| Handbook of Biology |
Arihant |
Read More: List of IISERs in India: Courses, Fee, Admission Process, Placements & Cutoffs
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Student Forum
Anything you would want to ask experts?Answered 4 days ago
Total marks of the IISER Entrance Exam are 240. The total number of questions in the exam is 60, each carrying four marks. Marks in each section are 15, making the sectional weightage 60. Questions are asked on Physics, Chemistry, Biology and Mathematics. In case of a wrong answer, there will be a d
M
Beginner-Level 5
Answered 4 days ago
There is no age limit to apply or appear for the IISER Entrance Exam 2026. However, applicants must have appeared for their Board examination in 2024, 2025 or 2026. Based on this, applicants must apply for the exam. Apart from this, students should have studied Physics, Chemistry, Biology and Mathe
A
Beginner-Level 5
Answered 4 days ago
IISER Entrance Exam is conducted for admission to the 5-year BS MS programme offered at the seven Indian Institutes of Science Education and Research. Apart from that, the IISER Aptitude Test scores are also accepted by IISc Bangalore for the 4-year BS course and for the BS - Medical Sciences and En
Contributor-Level 10
Answered 4 days ago
According to the IISER Entrance Exam 2025 analysis, Physics was the toughest section of the exam. The overall difficulty level ranged from moderate to tough. The topics covered in the question papers were Electricity and Magnetism, Mechanics, Optics and Modern Physics. The questions were distributed
A
Beginner-Level 5
Answered a week ago
The IISER entrance exam 2026 application process is likely to begin in the third week of March 2026. The mode of the application process is completely online. Students have to visit the exam portal to fill and submit the form. Along with entering the mandatory information, they also need to upload d
N
Beginner-Level 5
IISER Entrance Exam Notifications
The IISER Entrance Exam syllabus is in tune with the Class 11 and 12 Board exam syllabus. The questions in the examination are asked from four domains of the Science subject, which are Mathematics, Biology, Chemistry, and Physics.
As per the syllabus mentioned in the information brochure of IISER, it is observed that in the Biology subject maximum syllabus is covered from the Class 12 book. For the subjects of Physics, Mathematics and Chemistry, the syllabus is equally distributed in Class 11 and 12.