CBSE Class 11 Biology Syllabus 2024-25: Updated Curriculum

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

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

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

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).

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

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%

S. No

Related Topic Pages for Class 11 Biology

1.

Class 11 Biology Binomial Nomenclature

2.

Class 11 Biology Taxonomy

3.

Class 11 Biology Virus

4.

Class 11 Biology Plantae Kingdom

5.

Class 11 Biology Cell Theory

6.

Class 11 Biology Meiosis Mitosis

7.

Class 11 Biology Breathing Mechanism

8.

Class 11 Biology Neuron

S. No

Related Study Materials Links for Class 11 Biology

1.

CBSE Class 11 Biology NCERT Books

2.

CBSE Class 11 Biology NCERT Solutions

3.

CBSE Class 11 Biology NCERT Important Questions

4.

CBSE Class 11 Biology NCERT Revision Notes

5.

CBSE Class 11 Biology NCERT Exemplar