

NEET Biology Notes For Class 11
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NEET Biology Class 11 Notes Syllabus 2026-27 (Revised): Chapterwise Syllabus, Weightage, Deleted Topics
NEET Biology Class 11 Syllabus 2026-27 includes 10 units. This year some chapters like s-Block, Hydrogen, States of matter, and Environmental Biology have been removed from NEET Biology Class 11 syllabus.
After the release of the revised Biology syllabus by the National Medical Commission (NMC), you have to prepare fewer chapters for NEET 2026-27. Animal Kingdom, Morphology of Flowering Plants, Some basic concepts of organic Biology, and Anatomy of Flowering Plants are some high-weightage chapters from the class 11 Biology syllabus for NEET.
NEET exam pattern has been revised this year. To prepare your best, you must have the best study material for Biology syllabus. Along with that, you must solve NEET Biology mock tests and previous year's papers regularly.
CBSE Class 11 Biology Notes
CBSE Class 11 Biology Notes: CBSE Class 11 Biology Notes cover a wide range of important topics that provide students with a comprehensive understanding of living organisms, their structure, function, and behavior. These notes introduce fundamental concepts like the living world, biological classification, the structural organization in plants and animals, the cell, biomolecules, and physiology.
A thorough understanding of these concepts is crucial for students who wish to pursue higher studies in biology or related fields. The expertly crafted class 11 biology revision notes ensure that students have a clear understanding of the fundamental principles of biology. Moreover, these notes act as a quick reference guide for students, providing them with all the necessary diagrams and explanations that may come in the exams.
CBSE Notes for Class 11 Biology (Unit-Wise)
Unit I: Diversity In The Living World
Chapter 1: The Living World
Chapter 2: Biological Classification
Chapter 3: Plant Kingdom
Chapter 4: Animal Kingdom
Unit II: Structural Organisation In Plants And Animals
Chapter 5: Morphology of Flowering Plants
Chapter 6: Anatomy of Flowering Plants
Chapter 7: Structural Organisation in Animals
Unit III: Cell: Structure And Functions
Chapter 8: Cell: The Unit of Life
Chapter 9: Biomolecules
Chapter 10: Cell Cycle and Cell Division
Unit IV: Plant Physiology
Chapter 11: Photosynthesis in Higher Plants
Chapter 12: Respiration in Plants
Chapter 13: Plant Growth and Development
Unit V: Human Physiology
Chapter 14: Breathing and Exchange of Gases
Chapter 15: Body Fluids and Circulation
Chapter 16: Excretory Products and their Elimination
Chapter 17: Locomotion and Movement
Chapter 18: Neural Control and Coordination
Chapter 19: Chemical Coordination and Integration
Get chapter-wise notes for CBSE Class 11 Biology and ace your exams! Find comprehensive notes on The Living World, Biological Classification, Plant Kingdom, Animal Kingdom, Morphology of Flowering Plants, & more below.
Unit I: Diversity In The Living World
Chapter 1: The Living World
Introduction of the living world
Diversity in the Living World
Nomenclature for Living Organisms
Taxonomic Categories of Hierarchy
Genus and Family
Class and Phylum
Taxonomical Aid
Herbarium
Botanical Gardens
Chapter 2: Biological Classification
Introduction Of Biological Classification
Kingdom Monera
Archaebacteria
Eubacteria
Kingdom Protista
Chrysophytes
Dinoflagellates
Euglenoid
Slime Moulds
Protozoans
Kingdom Fungi
Phycomycetes
Ascomycetes
Basidiomycetes
Deuteromycetes
Kingdom Plantae
Viruses, Viroids, Prions And Lichens
Chapter 3: Plant Kingdom
What Is Plant Kingdom
Algae
Chlorophyceae
Phaeophyceae
Rhodophyceae
Bryophytes
Liverworts
Mosses
Pteridophytes
Gymnosperms
Angiosperms
Difference between Angiosperm and Gymnosperms
Plant Life Cycles and Alternation of Generations
Chapter 4: Animal Kingdom
Introduction of Animal Kingdom
Basis of Classification
Levels of Organisation
Symmetry
Diploblastic And Triploblastic Organisation
Classification of Animals
Phylum – Porifera
Phylum – Coelenterata (cnidaria)
Phylum – Ctenophora
Phylum – Platyhelminthes
Phylum – Aschelminthes
Phylum – Annelida
Phylum – Arthropoda
Phylum – Mollusca
Phylum – Echinodermata
Phylum – Hemichordata
Phylum – Chordata
Unit II: Structural Organisation In Plants And Animals
Chapter 5: Morphology of Flowering Plants
Introduction of Morphology of Flowering Plants
Root
Stem
The Leaf
Inflorescence
Flower
Parts of a flower
Androecium
Gynoecium
Fruit
Structure of a Dicotyledonous Seed
Structure of a monocotyledonous Seed
Semi-technical Description of a typical Flowering Plant
Fabaceae
Solanaceae
Liliaceae
Chapter 6: Anatomy of Flowering Plants
Meristematic Tissues
Permanent Tissues
Complex Tissues
Epidermal Tissue System
Dicotyledonous Root and Monocotyledonous Root
Dicotyledonous Stem and Monocotyledonous Stem
Dorsiventral (Dicotyledonous) Leaf
Isobilateral (Monocotyledonous) Leaf
Secondary Growth and Secondary Growth in Roots
Cork Cambium
Chapter 7: Structural Organization In Animals
Structural Organisation In Animal
Epithelial Tissue
Connective Tissue
Muscle Tissue
Neural Tissue
Organ And Organ System
Earthworm Morphology
Earthworm Anatomy
Cockroach Morphology
Cockroach Anatomy
Frogs Morphology and Anatomy
Unit III: Cell: Structure And Functions
Chapter 8: Cell-The Unit of Life
Prokaryotic Cells
Cell Envelope And Its Modifications
Ribosomes And Inclusion Bodies
Eukaryotic Cells
Cell Membrane
Endomembrane System
Mitochondria
Golgi Apparatus
Plastids
Ribosomes
Cytoskeleton
Cilia and Flagella
Nucleus
Chapter 9: Biomolecules
Introduction Of Biomolecules
How To Analyze Chemical Composition?
Primary And Secondary Metabolites
Biomacromolecules
Proteins
Polysaccharides
Nucleic Acids
Structure of Proteins
Dynamic State of Body Constituents – Concept of Metabolism
Metabolic Basis For Living
The Living State
Enzymes
How Do Enzymes Bring About Such High Rates Of Chemical Conversions?
Nature Of Enzyme Action
Mechanism of Enzyme Action
Factors Affecting Enzyme Activity
Co-factors
Chapter 10: Cell Cycle and Cell Division
Introduction Of Cell Cycle And Cell Division
M Phase
Significance Of Mitosis
Meiosis and Different Phases
Unit IV: Plant Physiology
Chapter 11: Photosynthesis in Higher Plants
Where Does Photosynthesis Take Place?
How Many Types Of Pigments Are Involved In Photosynthesis?
What Is Light Reaction?
The Electron Transport
Cyclic And Non-cyclic Photo-phosphorylation
Chemiosmotic Hypothesis
Where are the ATP And NADPH used?
Calvin Cycle
C4 Pathway
Photorespiration
Factors affecting Photosynthesis
Chapter 12: Respiration in Plants
Introduction Of Respiration In Plants
Do Plants Breathe?
Glycolysis
Fermentation
Aerobic Respiration
Tricarboxylic Acid Cycle
Electron Transport System (ETS) and Oxidative Phosphorylation
The Respiratory Balance Sheet
Amphibolic Pathway
Respiratory Quotient
Chapter 13: Plant-Growth and Development
Introduction Of Plant Growth and Development
Growth Rates
Differentiation, Dedifferentiation, and Redifferentiation
Development
Plant Growth Regulators
Physiological Effects of Plant Growth Regulators
Photoperiodism
Vernalization
Seed Dormancy
Unit V: Human Physiology
Chapter 14: Breathing and Exchange of Gases
Respiratory Organs
Mechanism of Breathing
Respiratory Volumes and Capacities
Exchange of Gases
Transport of Oxygen
Transport of Carbon Dioxide
Regulation of Respiration
Disorders of the Respiratory System
Chapter 15: Body Fluids and Circulation
Introduction Of Body Fluids And Circulation
Plasma and Formed Elements
Blood and Blood Group
Coagulation of Blood
Lymph (Tissue Fluid)
Circulatory Pathways
Human Circulatory System
Cardiac Cycle
Electrocardiograph (ECG)
Double Circulation
Regulation of Cardiac Activity
Disorders of the Circulatory System
Chapter 16: Excretory Products and their Elimination
Introduction Excretory Products and their Elimination
Human Excretory System
Urine Formation
The 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
Chapter 17: Locomotion and Movement
Locomotion and Movement
Muscle
Structure of Contractile Proteins
Mechanism of Muscle Contraction
Skeletal System
Joints
Chapter 18: Neural Control and Coordination
Human Neural System
Neurons as Structural and Functional Unit of Neural System
Generation and Conduction of Nerve Impulse
Transmission of Impulses
Central Neural System
Reflex Action And Reflex Arc
Sensory Reception And Processing
Human Eye
Human Ear
Chapter 19: Chemical Coordination and Integration
Endocrine Glands And Hormones
Pituitary Gland
Pineal Gland
Thyroid Gland
Parathyroid Gland
Thymus
Adrenal Gland
Pancreas
Testis
Ovary
Hormones of the Heart, Kidney, and Gastrointestinal Tract
Mechanism of Hormone Action
Conclusion:
CBSE Class 11 Biology Notes cover a wide range of topics, from the basic principles of life to the complex workings of living organisms. The expertly crafted revision notes provide students with a comprehensive understanding of the subject, ensuring that they are well-prepared for their exams and future academic pursuits.
Check: NEET 2026-27 Preparation Books
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