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CBSE Class 11 Biology: Chapter-wise Notes and PYQs

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CBSE · Class 11 · 2026-27

CBSE Class 11 Biology: chapter-wise study guide

All 19 chapters of CBSE Class 11 Biology for the 2026-27 session. Each chapter page explains the ideas, gives tricks to remember them, shows where students lose marks, and links to practice.

  • 19 chapters
  • 38 topic pages
Start with the first chapter

Exam note: School annual exam: theory 70 marks (3 hours) and practicals 30. 'Digestion and Absorption' is taught from CBSE reading material and assessed in school only (formatively).

Diversity of Living Organisms

  1. The Living World

  2. Biological Classification

  3. Plant Kingdom

  4. Animal Kingdom

Structural Organization in Plants and Animals

  1. Morphology of Flowering Plants

  2. Anatomy of Flowering Plants

  3. Structural Organisation in Animals

Cell: Structure and Function

  1. Cell: The Unit of Life

  2. Biomolecules

  3. Cell Cycle and Cell Division

Plant Physiology

  1. Photosynthesis in Higher Plants

  2. Respiration in Plants

  3. Plant Growth and Development

Human Physiology

  1. Breathing and Exchange of Gases

  2. Body Fluids and Circulation

  3. Excretory Products and their Elimination

  4. Locomotion and Movement

  5. Neural Control and Coordination

  6. Chemical Coordination and Integration

Syllabus source: CBSE Biology syllabus 2026-27 (Classes XI-XII), NCERT textbooks (Reprint 2026-27)