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CBSE Class 11 Biology Syllabus 2026-27 with Free PDF

CBSE Class 11 Biology Syllabus 2026-27 with Free PDF

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CBSE Class 11 Biology Syllabus 2026-27: Complete Overview

The CBSE Class 11 Biology Syllabus 2026-27 has been updated as per the latest NCERT curriculum to help students build a strong foundation in Biology. At Vedantu, you can access the complete class 11 biology syllabus, including unit-wise chapters, marks distribution, practicals, and the latest exam pattern.

Table of Content

As part of the updated CBSE Class 11 Syllabus, the biology syllabus class 11 CBSE helps you understand unit weightage, plan your studies effectively, and revise every important topic with confidence. Download the CBSE Biology Syllabus Class 11 PDF for FREE on Vedantu and start your exam preparation today.

CBSE Biology Class 11 Syllabus 2026-27 Course Structure

The table below shows the course structure and the distribution of marks in the updated CBSE Class 11 Biology Syllabus 2026-27.

Unit Title	Marks
I - Diversity of Living Organisms	15
II - Structural Organisation in Plants and Animals	10
III - Cell: Structure and Function	15
IV - Plant Physiology	12
V - Human Physiology	18
Total	70

Quick Overview of CBSE Biology Class 11 Syllabus 2026-27

The CBSE Biology Class 11 Syllabus 2026-27 provides interesting chapters and topics. It starts with the basics of living things and later into complex concepts. Check out the table below for a breakdown of what you'll be learning in each unit.

Title	Description
I - Diversity of Living Organisms	Chapter-1: The Living World (Biodiversity, Need for Classification, Three Domains of Life, Taxonomy & Systematics, Species Concept, Binomial Nomenclature) Chapter-2: Biological Classification (Five Kingdom Classification, Salient Features & Classification of Monera, Protista & Fungi, Lichens, Viruses & Viroids) Chapter- 3: Plant Kingdom (Classification of Plants, Salient Features of Algae, Bryophyta, Pteridophyta, Gymnospermae (Excluding Angiosperms, Plant Life Cycle & Alternation of Generations) Chapter-4: Animal Kingdom (Salient Features & Classification of Animals (Non-Chordates up to Phylum Level & Chordates up to Class Level)
II - Structural Organisation in Animals and Plants	Chapter-5: Morphology of Flowering Plants (Morphology of Root, Stem, Leaf, Inflorescence, Flower, Fruit & Seed. Description of Family Solanaceae) Chapter-6: Anatomy of Flowering Plants (Anatomy & Functions of Tissue Systems in Dicots & Monocots) Chapter-7: Structural Organisation in Animals (Morphology, Anatomy & Functions of Digestive, Circulatory, Respiratory, Nervous & Reproductive Systems of Frog)
III - Cell: Structure and Function	Chapter-8: Cell-The Unit of Life (Cell Theory, Prokaryotic & Eukaryotic Cells, Plant & Animal Cells, Cell Envelope, Cell Membrane, Cell Wall, Cell Organelles (Structure & Function), Endomembrane System, Endoplasmic Reticulum, Golgi Bodies, Lysosomes, Vacuoles, Mitochondria, Ribosomes, Plastids, Microbodies, Cytoskeleton, Cilia, Flagella, Centrioles, Nucleus) Chapter-9: Biomolecules (Chemical Constituents of Living Cells, Structure & Function of Proteins, Carbohydrates, Lipids, Nucleic Acids, Enzymes (Types, Properties, Enzyme Action) Chapter-10: Cell Cycle and Cell Division (Cell Cycle, Mitosis, Meiosis & their Significance)
IV-Plant Physiology	Chapter-11: Photosynthesis in Higher Plants (Photosynthesis as Autotrophic Nutrition, Site of Photosynthesis, Pigments Involved (Elementary Idea), Photochemical & Biosynthetic Phases, Cyclic & Non-Cyclic Photophosphorylation, Chemiosmotic Hypothesis, Photorespiration, C3 & C4 Pathways, Factors Affecting Photosynthesis) Chapter-12: Respiration in Plants (Exchange of Gases, Cellular Respiration (Glycolysis, Fermentation (Anaerobic), TCA Cycle & Electron Transport System (Aerobic)), Energy Relations (Number of ATP Molecules Generated), Amphibolic Pathways, Respiratory Quotient) Chapter-13: Plant – Growth and Development (Seed Germination, Phases of Plant Growth & Plant Growth Rate, Conditions of Growth, Differentiation, Dedifferentiation & Redifferentiation, Sequence of Developmental Processes in a Plant Cell, Growth Regulators (Auxin, Gibberellin, Cytokinin, Ethylene, ABA))
V - Human Physiology	Chapter-14: Breathing and Exchange of Gases (Respiratory Organs in Animals (Recall Only), Respiratory System in Humans, Mechanism of Breathing & its Regulation (Gas Exchange, Transport & Regulation), Respiratory Volume, Disorders (Asthma, Emphysema, Occupational Respiratory Disorders) Chapter-15: Body Fluids and Circulation (Composition of Blood, Blood Groups, Coagulation, Composition of Lymph & its Function, Human Circulatory System (Structure of Heart & Blood Vessels), Cardiac Cycle, Cardiac Output, ECG, Double Circulation, Regulation of Cardiac Activity, Disorders (Hypertension, Coronary Artery Disease, Angina Pectoris, Heart Failure) Chapter-16: Excretory Products and Their Elimination (Modes of Excretion, Human Excretory System (Structure & Function), Urine Formation, Osmoregulation, Regulation of Kidney Function, Disorders (Uremia, Renal Failure, Renal Calculi, Nephritis), Dialysis & Artificial Kidney, Kidney Transplant) Chapter-17: Locomotion and Movement (Types of Movement, Skeletal Muscle, Contractile Proteins & Muscle Contraction, Skeletal System & its Functions, Joints, Disorders (Myasthenia Gravis, Tetany, Muscular Dystrophy, Arthritis, Osteoporosis, Gout) Chapter-18: Neural Control and Coordination (Neuron & Nerves, Nervous System (Central, Peripheral & Visceral), Generation & Conduction of Nerve Impulse) Chapter-19: Chemical Coordination and Integration (Endocrine Glands & Hormones, Human Endocrine System, Mechanism of Hormone Action (Elementary Idea), Role of Hormones, Disorders

Class 11 Biology Deleted Syllabus 2026-27

The Class 11 Biology Deleted Syllabus 2026-27 is available here. There are a few topics, examples, and even entire chapters that are no longer part of the curriculum. The table below shows the removed sections, so you and your teachers can focus on the most relevant material for your exams.

Unit	Chapter Number	Chapter Name	Eliminated/Deleted Topics	Topics Added
Diversity of Living Organisms	1	The living world	- tools for the study of taxonomy	-
Plant Kingdom	3	Plant Kingdom	- Angiosperms, Plant Life Cycle, Alternation of Generations	-
Structural Organization in Animals and Plants	5	Morphology of Flowering Plants	- tissue systems in dicots and monocots	-
Cell: Structure and Function	9	Biomolecules	- Nature of Bond Linking Monomers in a Polymer, Dynamic State of Body Constituents (Metabolic Basis for Living)	-
Plant Physiology	11	Transport in Plants	- Complete Chapter Removed	-
Plant Physiology	12	Mineral Nutrition	- Complete Chapter Removed	-
Plant Physiology	13	Plant - Growth and Development	-	Seed dormancy, vernalisation, photoperiodism
Human Physiology	16	Digestion and Absorption	- Complete Chapter Removed	-
Neural Control and Coordination	19	Neural Control and Coordination	-	reflex action, sensory perception, sense organs

Class 11 Biology Practical Syllabus 2026-27

Get the latest updates about the Lab experiments! Here's the CBSE Class 11 Biology Practical Syllabus 2026-27:

List of Experiments

Experiment	Description
Study of Flowering Plants	- Identify locally available flowering plants (Solanaceae preferred, substitutions allowed) - Dissect and display floral parts (whorls, anther, ovary) - Determine floral formula and diagram - Identify root type (tap/adventitious) - Identify stem type (herbaceous/woody) - Identify leaf characteristics (arrangement, shape, venation, simple/compound)
T.S. of Dicot & Monocot Roots/Stems	Prepare and study the transverse section of dicot and monocot primary roots and stems
Osmosis	Investigate osmosis using a potato osmometer
Plasmolysis	Observe plasmolysis in plant epidermal peels (e.g., Rhoeo leaves, onion bulb scales)
Stomata Distribution	Compare stomata distribution on upper and lower leaf surfaces
Transpiration Rate	Compare transpiration rates on upper and lower leaf surfaces
Biomolecule Detection	Test for sugar, starch, protein, and fat presence in plant/animal materials
Paper Chromatography	Separate plant pigments using paper chromatography
Respiration Rate	Study respiration rate in flower buds/leaf tissue/germinating seeds
Urine Analysis	- Test for urea presence in urine - Test for sugar presence in urine - Test for albumin presence in urine - Test for bile salts presence in urine

Study/observation of the following (spotting)

1. Study of the parts of a compound microscope.

2. Study of the specimens/slides/models and identification with reasons - Bacteria, Oscillatoria, Spirogyra, Rhizopus, mushroom, yeast, liverwort, moss, fern, pine, one monocotyledonous plant, one dicotyledonous plant and one lichen

3. Study of virtual specimens/slides/models and identification with reasons - Amoeba, Hydra, liver fluke, Ascaris, leech, earthworm, prawn, silkworm, honeybee, snail, starfish, shark, rohu, frog, lizard, pigeon, and rabbit

4. Study of tissues and diversity in shapes and sizes of plant and animal cells (palisade cells, guard cells, parenchyma, collenchyma, sclerenchyma, xylem, phloem, squamous epithelium, muscle fibres, and mammalian blood smear) through temporary/permanent slides.

5. Study of mitosis in onion root tip cells and animal cells (grasshopper) from permanent slides

6. Study of different modifications in roots, stems, and leaves.

7. Study and identification of different types of inflorescence (cymose and racemose).

CBSE Class 11 Biology Practical Syllabus 2026-27 - Marking Scheme

This table explains how the 30 marks for your Class 11 Biology practical exam (lasting 3 hours) will be divided. It shows what aspects of your performance will be evaluated.

Experiments	Marks
One Major Experiment (Exp. No. 1, 3, 7, or 8)	5
One Minor Experiment (Exp. No. 6, 9, 10, 11, 12, or 13)	4
Part A: Slide Preparation (Exp. No. 2, 4, or 5)	5
Part B: Spotting	7
Part C: Practical Record & Viva Voce	4
Project Record & Viva Voce	5
Total	30

CBSE Biology Class 11 Syllabus 2026-27 - (044) Question Paper Design

The Central Board of Secondary Education (CBSE) has released the question paper design for the upcoming 2026-27 academic year Biology exam for Class 11 (code 044). This breakdown outlines the format and types of questions you can expect for the test.

S. No	Typology of Questions	Total Marks	% Weightage
1	Remembering (Knowledge-Based)	7	10%
2	Understanding (Comprehension)	21	30%
3	Application	21	30%
4	High Order Thinking Skills (Analysis & Synthesis)	12	17%
5	Evaluation	9	13%
Total		70	100%

Why Download the CBSE Class 11 Biology Syllabus 2026-27 PDF?

The CBSE Class 11 Biology Syllabus 2026-27 gives a clear overview of all chapters, practicals, assessments, and important topics.
Download the class 11 biology syllabus PDF to keep the latest syllabus handy and access it anytime, even offline.
The biology syllabus class 11 CBSE also helps you understand unit-wise weightage and plan your studies and revision effectively.
You can also check the Class 11 Biology Deleted Syllabus 2026-27 to know which topics have been removed.
Keep the CBSE Biology Syllabus Class 11 PDF handy to stay updated and track your preparation throughout the year.

Prescribed Books for Class 11 Biology

Biology Class-XI, Published by NCERT
Other related books and manuals brought out by NCERT (including multimedia).

Access the revised CBSE Class 11 Biology Syllabus 2026-27, useful study resources, and effective preparation strategies to prepare confidently for your exams.

Stay consistent, understand each concept, and follow the class 11 biology syllabus to keep your preparation focused. Use the CBSE Biology Syllabus Class 11 PDF as a quick reference and get ready to excel in your Biology exam.

FAQs on CBSE Class 11 Biology Syllabus 2026-27 with Free PDF

1. How many chapters are included in the Class 11 Biology syllabus 2026-27?

The class 11 biology syllabus 2026-27 covers five main units:

Diversity of Living Organisms
Structural Organisation in Plants and Animals
Cell: Structure and Function
Plant Physiology
Human Physiology

2. Where can I download the NCERT syllabus for class 11 biology PDF?

You can download the official NCERT syllabus for class 11 biology PDF from the CBSE website or from Vedantu. The PDF contains the latest class 11 biology syllabus, marking schemes, practical lists, and any updates or deleted chapters for 2026-27.

3. How can I prepare using the CBSE Class 11 Biology Syllabus 2026-27?

The CBSE Class 11 Biology Syllabus 2026-27 helps you understand the chapters, practical topics, and unit-wise weightage. Use it to plan your study schedule, prioritise important topics, and track your revision. Keep the class 11 biology syllabus PDF handy to make sure you cover the complete syllabus before the exam.

4. Does the Class 11 Biology syllabus 2026-27 help with NEET preparation?

Yes, the Class 11 Biology syllabus 2026-27 forms a strong foundation for NEET. It closely follows the class 11 biology syllabus NCERT, which is the main reference for NEET Biology. Make sure to focus on the topics included and check the class 11 biology deleted syllabus 2026-27 to avoid spending time on removed sections.

5. What is the hardest chapter in the Class 11 Biology syllabus NCERT?

Many students find Human Physiology, Neural Control and Coordination, and Molecular Basis of Inheritance challenging in the class 11 biology syllabus, NCERT. These topics require careful study and regular revision, so use the NCERT syllabus for Class 11 Biology PDF to plan your study time.

6. What is the structure of the class 11 biology syllabus for 2026-27?

The class 11 biology syllabus 2026-27 is divided into five major units, each containing several chapters as outlined in the class 11 biology syllabus NCERT. The structure includes both theoretical topics and practicals, as detailed in the NCERT syllabus for class 11 biology PDF.

7. Is the CBSE Class 11 Biology Syllabus changed for 2026-27?

Yes, students should follow the latest CBSE Class 11 Biology Syllabus 2026-27 for their academic preparation. The updated syllabus outlines the prescribed chapters, practical work, and assessment requirements for the year.

8. Is the Class 11 biology syllabus NCERT sufficient for CBSE board exams?

Yes, the Class 11 biology syllabus NCERT is the official curriculum followed for CBSE board exams. Make sure to study every chapter listed in the Class 11 Biology syllabus 2026-27 and check for any deletions in the Class 11 Biology deleted syllabus 2026-27.