CBSE · Class 11
Biology Complete Guide
Syllabus, official resources, chapter guides, textbook solutions, question bank, model papers, revision plan, exam tips, and FAQs.
Chapters
22
Published Guides
45
Chapter Guides
22/22
Practice Resources
0
📝 Textbook Exercise Solutions — Chapter-wise
MCQ, short answers, long answers, and numericals with full worked solutions
📥 NCERT + Best Reference Books for Biology
Free NCERT link · ranked reference books · what to read and why
Syllabus and Official Resources
Official-first5 syllabus focus areas with CBSE official resources as the primary source.
View sectionTextbook Exercise Solutions
PlannedChapter-wise MCQ, short answers, long answers, and numericals with worked solutions.
View sectionImportant Questions
Ready5 question patterns are listed for one-mark, short-answer, and long-answer practice.
View sectionModel Papers
PlannedModel paper practice will be added with time plans and correction checklists.
View sectionRevision Plan
PlannedRevision plan will be added with weekly targets and mistake-notebook checks.
View sectionExam Tips
Subject-specificExam guidance focuses on biology presentation, keywords, time use, and common mistakes.
View sectionFAQs
In guidesFAQs are included inside individual guides so answers stay close to the exact chapter or resource.
View sectionSyllabus Roadmap
- Diversity in the living world: classification, plant and animal kingdoms.
- Structural organisation: morphology and anatomy of plants and animals.
- Cell biology: cell structure, biomolecules, cell cycle.
- Plant physiology: transport, photosynthesis, respiration, growth.
- Human physiology: digestion, respiration, circulation, excretion.
Official Books
Free NCERT textbook + best reference books for CBSE Biology Class 11.
NCERT + Reference Books →Chapter Dashboard
22/22 chapter guides published
Diversity in Living World · Chapter 1
The Living World
Diversity in Living World · Chapter 2
Biological Classification
Diversity in Living World · Chapter 3
Plant Kingdom
Diversity in Living World · Chapter 4
Animal Kingdom
Structural Organisation · Chapter 5
Morphology of Flowering Plants
Structural Organisation · Chapter 6
Anatomy of Flowering Plants
Structural Organisation · Chapter 7
Structural Organisation in Animals
Cell Biology · Chapter 8
Cell: The Unit of Life
Cell Biology · Chapter 9
Biomolecules
Cell Biology · Chapter 10
Cell Cycle and Cell Division
Plant Physiology · Chapter 11
Transport in Plants
Plant Physiology · Chapter 12
Mineral Nutrition
Plant Physiology · Chapter 13
Photosynthesis in Higher Plants
Plant Physiology · Chapter 14
Respiration in Plants
Plant Physiology · Chapter 15
Plant Growth and Development
Human Physiology · Chapter 16
Digestion and Absorption
Human Physiology · Chapter 17
Breathing and Exchange of Gases
Human Physiology · Chapter 18
Body Fluids and Circulation
Human Physiology · Chapter 19
Excretory Products and their Elimination
Human Physiology · Chapter 20
Locomotion and Movement
Human Physiology · Chapter 21
Neural Control and Coordination
Human Physiology · Chapter 22
Chemical Coordination and Integration
Question Bank
- One-mark definitions and direct NCERT facts
- Two-mark short answers and difference-between questions
- NCERT exercise and in-text questions
- Unit-wise important questions for quick revision
- Five-mark explanations, problems, or structured answers
Model Papers
- After each chapter, solve a short unit test.
- After every unit, revise mistakes before the next chapter.
- In the final month, write one full model paper per week.
- Last cycle: only weak topics, formulas, diagrams, and key terms.
Revision Plan
- Week 1: Read NCERT and mark definitions, formulas, diagrams, and dates.
- Week 2: Solve all NCERT exercises and in-text questions.
- Week 3: Practise important questions, diagrams, and writing formats.
- Week 4: Write model papers and revise only the mistake notebook.
Published Chapter Guides
chapter-guide
CBSE Class 11 Biology Chapter 6 Notes: Anatomy of Flowering Plants
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 6 — Anatomy of Flowering Plants. Covers meristems, tissue systems, dicot and monocot anatomy of root, stem, and leaf, secondary growth, annual rings, heartwood, and sapwood with comparison tables and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 4 Notes: Animal Kingdom
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 4 — Animal Kingdom. Covers bases of classification, all major phyla from Porifera to Chordata, vertebrate classes, and key comparisons with tables and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 2 Notes: Biological Classification
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 2 — Biological Classification. Covers Whittaker's five-kingdom system, Monera, Protista, Fungi, Plantae, Animalia, viruses, viroids, prions, and lichens with comparison tables and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 9 Notes: Biomolecules
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 9 Biomolecules — amino acids, proteins, carbohydrates, lipids, nucleic acids, enzymes, metabolic pathways, and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 18 Notes: Body Fluids and Circulation
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 18 — Body Fluids and Circulation. Covers blood composition, blood groups ABO Rh, coagulation, lymph, human heart, cardiac cycle, ECG, double circulation, and circulatory disorders.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 17 Notes: Breathing and Exchange of Gases
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 17 — Breathing and Exchange of Gases. Covers respiratory system, breathing mechanism, gas exchange, O2 and CO2 transport, oxygen-haemoglobin dissociation curve, Bohr effect, lung volumes, and respiratory disorders.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 10 Notes: Cell Cycle and Cell Division
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 10 Cell Cycle and Cell Division — phases of cell cycle, mitosis, meiosis, their significance, and comparison tables for exams.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 8 Notes: Cell: The Unit of Life
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 8 — Cell: The Unit of Life. Covers cell theory, prokaryotic and eukaryotic cell structure, organelles (mitochondria, plastids, ribosomes, ER, Golgi, lysosomes), fluid mosaic model, endomembrane system with comparison tables and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 22 Notes: Chemical Coordination and Integration
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 22 — Chemical Coordination and Integration. Covers all endocrine glands, hormones, hypothalamus, pituitary, thyroid, parathyroid, adrenal, pancreas, hormone mechanisms, feedback regulation, and endocrine disorders.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 16 Notes: Digestion and Absorption
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 16 — Digestion and Absorption. Covers alimentary canal, digestive glands, enzymes, digestion in mouth/stomach/intestine, absorption, assimilation, and disorders with tables, diagrams, and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 19 Notes: Excretory Products and their Elimination
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 19 — Excretory Products and their Elimination. Covers ammonotelism, ureotelism, uricotelism, nephron structure, urine formation (GFR, tubular reabsorption, secretion), countercurrent mechanism, ADH, RAAS, dialysis, and kidney disorders.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 20 Notes: Locomotion and Movement
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 20 — Locomotion and Movement. Covers muscle types, sarcomere structure, sliding filament theory, skeletal system (axial and appendicular), joint types, and musculoskeletal disorders.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 12 Notes: Mineral Nutrition
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 12 Mineral Nutrition — essential elements, macro- and micronutrients, deficiency symptoms, hydroponics, nitrogen cycle, biological nitrogen fixation, and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 5 Notes: Morphology of Flowering Plants
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 5 — Morphology of Flowering Plants. Covers root, stem, leaf modifications, inflorescence types, flower structure, fruit, seed, and families Fabaceae, Solanaceae, Liliaceae with tables and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 21 Notes: Neural Control and Coordination
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 21 — Neural Control and Coordination. Covers neuron structure, nerve impulse (resting and action potential), synapse, CNS, PNS, reflex arc, sense organs (eye and ear), and neural coordination.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 13 Notes: Photosynthesis in Higher Plants
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 13 Photosynthesis in Higher Plants — light and dark reactions, Calvin cycle, C3 C4 pathways, photorespiration, photophosphorylation, and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 15 Notes: Plant Growth and Development
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 15 — Plant Growth and Development. Covers growth phases, sigmoid curve, PGRs (auxins, gibberellins, cytokinins, ABA, ethylene), photoperiodism, vernalisation, and seed dormancy with tables, diagrams, and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 3 Notes: Plant Kingdom
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 3 — Plant Kingdom. Covers algae, bryophytes, pteridophytes, gymnosperms, angiosperms, alternation of generations, and life cycles with comparison tables and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 14 Notes: Respiration in Plants
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 14 Respiration in Plants — glycolysis, Krebs cycle, ETC, oxidative phosphorylation, fermentation, respiratory quotient, and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 7 Notes: Structural Organisation in Animals
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 7 — Structural Organisation in Animals. Covers animal tissues (epithelial, connective, muscular, neural), and morphology and anatomy of earthworm, cockroach, and frog with comparison tables and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 1 Notes: The Living World
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 1 — The Living World. Covers biodiversity, taxonomy, binomial nomenclature, taxonomic categories, and taxonomic aids with tables and exam tips.
11 June 2026
chapter-guide
CBSE Class 11 Biology Chapter 11 Notes: Transport in Plants
NCERT-aligned study guide for CBSE Class 11 Biology Chapter 11 Transport in Plants — diffusion, osmosis, active transport, water potential, transpiration pull, cohesion-tension theory, phloem transport, and exam tips.
11 June 2026
Exercise Solutions
Chapter-wise textbook answers with a quick path back to notes.
The Living World
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 1 — all intext and chapter-end exercise questions on classification, taxonomy, and nomenclature answered clearly.
11 June 2026
Biological Classification
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 2 — all intext and chapter-end exercise questions on five-kingdom system, Monera, Protista, Fungi, Plantae, and Animalia answered clearly.
11 June 2026
Plant Kingdom
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 3 — all intext and chapter-end exercise questions on Algae, Bryophytes, Pteridophytes, Gymnosperms, and Angiosperms answered clearly.
11 June 2026
Animal Kingdom
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 4 — all intext and chapter-end exercise questions on basis of classification, invertebrate and vertebrate phyla answered clearly.
11 June 2026
Morphology of Flowering Plants
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 5 — all intext and chapter-end exercise questions on root, stem, leaf, flower, fruit, seed, and families answered clearly.
11 June 2026
Anatomy of Flowering Plants
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 6 — all intext and chapter-end exercise questions on tissue systems, monocot and dicot anatomy, secondary growth answered clearly.
11 June 2026
Structural Organisation in Animals
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 7 — all intext and chapter-end exercise questions on animal tissues, earthworm, cockroach, and frog anatomy answered clearly.
11 June 2026
Cell: The Unit of Life
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 8 — all intext and chapter-end exercise questions on cell theory, prokaryotic and eukaryotic cells, cell organelles answered clearly.
11 June 2026
Biomolecules
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 9 — all intext and chapter-end exercise questions on proteins, carbohydrates, lipids, nucleic acids, enzymes, and metabolic pathways answered clearly.
11 June 2026
Cell Cycle and Cell Division
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 10 — all intext and chapter-end exercise questions on mitosis, meiosis, and cell cycle phases answered clearly.
11 June 2026
Transport in Plants
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 11 — all intext and chapter-end exercise questions on diffusion, osmosis, water potential, plasmolysis, transpiration, ascent of sap, and pressure flow hypothesis answered clearly.
11 June 2026
Mineral Nutrition
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 12 — all intext and chapter-end exercise questions on essential minerals, macronutrients, micronutrients, nitrogen fixation, nitrogen cycle, and hydroponics answered clearly.
11 June 2026
Photosynthesis in Higher Plants
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 13 — all intext and chapter-end exercise questions on light reactions, dark reactions, Calvin cycle, C3 and C4 pathways, photorespiration, and factors affecting photosynthesis answered clearly.
11 June 2026
Respiration in Plants
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 14 — all intext and chapter-end exercise questions on glycolysis, Krebs cycle, electron transport chain, fermentation, oxidative phosphorylation, respiratory quotient, and amphibolic pathway answered clearly.
11 June 2026
Plant Growth and Development
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 15 — all intext and chapter-end exercise questions on growth phases, plant growth regulators, photoperiodism, vernalisation, seed dormancy, differentiation, and dedifferentiation answered clearly.
11 June 2026
Digestion and Absorption
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 16 — all intext and chapter-end exercise questions on alimentary canal, digestive glands, digestion process, absorption, and disorders answered clearly.
11 June 2026
Breathing and Exchange of Gases
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 17 — all intext and chapter-end exercise questions on respiratory system, breathing mechanism, gas exchange, oxygen and CO₂ transport, and respiratory disorders answered clearly.
11 June 2026
Body Fluids and Circulation
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 18 — all intext and chapter-end exercise questions on blood composition, blood groups, coagulation, lymph, heart anatomy, cardiac cycle, ECG, and double circulation answered clearly.
11 June 2026
Excretory Products and their Elimination
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 19 — all intext and chapter-end exercise questions on excretory organs, kidney structure, nephron, urine formation, dialysis, and disorders answered clearly.
11 June 2026
Locomotion and Movement
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 20 — all intext and chapter-end exercise questions on types of movement, muscles, skeletal system, joints, and disorders answered clearly.
11 June 2026
Neural Control and Coordination
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 21 — all intext and chapter-end exercise questions on neuron structure, nerve impulse, synapse, CNS, PNS, reflex action, eye and ear answered clearly.
11 June 2026
Chemical Coordination and Integration
Complete NCERT Solutions for CBSE Class 11 Biology Chapter 22 — all intext and chapter-end exercise questions on endocrine glands, hormones, hypothalamus, pituitary, thyroid, adrenal, pancreas, and disorders answered clearly.
11 June 2026
Exercise Solutions
CBSE Class 11 Biology NCERT exercise solutions with answer patterns, key concepts, and exam tips for all 22 chapters.
11 June 2026