IISER Biology Syllabus 2025 (OUT): Check Class 11 and Class 12 NCERT Biology Syllabus Here

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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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

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.

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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:

• 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:

Marking scheme: Candidates will be awarded three marks for each correct answer. There will be negative marking of one mark for each incorrect answer.

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