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NCERT · Class 11

NCERT Class 11 Biology: Chapter List and Official PDFs

All 19 chapters of the NCERT Class 11 Biology textbook(s), with the section headings of each chapter and a link to the official PDF on ncert.nic.in. Open a chapter to see what it covers.

19 chapters

Biology (Class 11, NCERT)

Chapter 1: The Living WorldUnit I: Diversity of Living Organisms
  • Diversity in the Living World
  • Taxonomic Categories
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 2: Biological ClassificationUnit I: Diversity of Living Organisms
  • Kingdom Monera
  • Kingdom Protista
  • Kingdom Fungi
  • Kingdom Plantae
  • Kingdom Animalia
  • Viruses, Viroids, Prions and Lichens
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 3: Plant KingdomUnit I: Diversity of Living Organisms
  • Algae
  • Bryophytes
  • Pteridophytes
  • Gymnosperms
  • Angiosperms
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 4: Animal KingdomUnit I: Diversity of Living Organisms
  • Basis of Classification
  • Classification of Animals
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 5: Morphology of Flowering PlantsUnit II: Structural Organization in Plants and Animals
  • 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
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 6: Anatomy of Flowering PlantsUnit II: Structural Organization in Plants and Animals
  • The Tissue System
  • Anatomy of Dicotyledonous and Monocotyledonous Plants
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 7: Structural Organisation in AnimalsUnit II: Structural Organization in Plants and Animals
  • Organ and Organ System
  • Frogs
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 8: Cell: The Unit of LifeUnit III: Cell: Structure and Function
  • What is a Cell?
  • Cell Theory
  • An Overview of Cell
  • Prokaryotic Cells
  • Eukaryotic Cells
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 9: BiomoleculesUnit III: Cell: Structure and Function
  • How to Analyse Chemical Composition?
  • Primary and Secondary Metabolites
  • Biomacromolecules
  • Proteins
  • Polysaccharides
  • Nucleic Acids
  • Structure of Proteins
  • Enzymes
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 10: Cell Cycle and Cell DivisionUnit III: Cell: Structure and Function
  • Cell Cycle
  • M Phase
  • Significance of Mitosis
  • Meiosis
  • Significance of Meiosis
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 11: Photosynthesis in Higher PlantsUnit IV: Plant Physiology
  • What do We Know?
  • Early Experiments
  • Where does Photosynthesis Take Place?
  • How Many Types of Pigments are Involved in Photosynthesis?
  • What is Light Reaction?
  • The Electron Transport
  • Where are the ATP and NADPH Used?
  • The C4 Pathway
  • Photorespiration
  • Factors Affecting Photosynthesis
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 12: Respiration in PlantsUnit IV: Plant Physiology
  • Do Plants Breathe?
  • Glycolysis
  • Fermentation
  • Aerobic Respiration
  • The Respiratory Balance Sheet
  • Amphibolic Pathway
  • Respiratory Quotient
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 13: Plant Growth and DevelopmentUnit IV: Plant Physiology
  • Growth
  • Differentiation, Dedifferentiation and Redifferentiation
  • Development
  • Plant Growth Regulators
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 14: Breathing and Exchange of GasesUnit V: Human Physiology
  • Respiratory Organs
  • Mechanism of Breathing
  • Exchange of Gases
  • Transport of Gases
  • Regulation of Respiration
  • Disorders of Respiratory System
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 15: Body Fluids and CirculationUnit V: Human Physiology
  • Blood
  • Lymph (Tissue Fluid)
  • Circulatory Pathways
  • Double Circulation
  • Regulation of Cardiac Activity
  • Disorders of Circulatory System
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 16: Excretory Products and their EliminationUnit V: Human Physiology
  • 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
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 17: Locomotion and MovementUnit V: Human Physiology
  • Types of Movement
  • Muscle
  • Skeletal System
  • Joints
  • Disorders of Muscular and Skeletal System
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 18: Neural Control and CoordinationUnit V: Human Physiology
  • Neural System
  • Human Neural System
  • Neuron as Structural and Functional Unit of Neural System
  • Central Neural System
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Chapter 19: Chemical Coordination and IntegrationUnit V: Human Physiology
  • Endocrine Glands and Hormones
  • Human Endocrine System
  • Hormones of Heart, Kidney and Gastrointestinal Tract
  • Mechanism of Hormone Action
  • Summary
  • Exercises

Official NCERT PDF (English) · हिंदी माध्यम PDF

Free sample questions

Three sample questions with answers. Full explanations — and the rest of the question bank — are free to read after you sign up.

Q1. Which feature distinguishes angiosperms from gymnosperms?

  1. They produce seeds
  2. They are heterosporous
  3. They have well differentiated vascular tissues
  4. Seeds are enclosed in fruits formed from the ovary
Show answer

Correct answer: D. Seeds are enclosed in fruits formed from the ovary

🔒 The full explanation is free to read after you sign up →

Q2. Accessory pigments such as chlorophyll b, xanthophylls and carotenoids are important in photosynthesis because they

  1. form the reaction centre of photosystem I
  2. directly reduce NADP+ to NADPH
  3. absorb other wavelengths of light, pass the energy to chlorophyll a and protect it from photo-oxidation
  4. split water molecules in photosystem II
Show answer

Correct answer: C. absorb other wavelengths of light, pass the energy to chlorophyll a and protect it from photo-oxidation

🔒 The full explanation is free to read after you sign up →

Q3. The system of giving every organism a two-word scientific name, in use worldwide, was introduced by

  1. R.H. Whittaker
  2. Carolus Linnaeus
  3. Aristotle
  4. Ernst Mayr
Show answer

Correct answer: B. Carolus Linnaeus

🔒 The full explanation is free to read after you sign up →

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Chapter lists follow the NCERT textbooks as available to us; textbooks are revised from time to time, so confirm on ncert.nic.in.

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