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Class 11th Biology || Menu
  • MCQ Biology Class 11
  • Question Answer Biology Class 11
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  • Notes Biology Class 11
  • Previous Year Question Paper Biology Class 11
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  • The Living World
    • Features of Living Beings, Diversity in the Living World
    • Taxonomic Categories and Taxonomical Aids
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  • Biological Classification
    • Kingdoms: Monera and Protista
    • Kingdom: Fungi, Plantae, Animalia
    • Virus, Viroids and Lichens
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  • Plant Kingdom
    • Algae
    • Bryophytes and Pteridophytes
    • Gymnosperms and Angiosperms
    • Plant Life Cycles
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  • Animal Kingdom
    • Basis of Classification
    • Porifera, Coelenterata, Ctenophora
    • Platyhelminthes, Aschelminthes, Annelida
    • Arthropoda, Mollusca, Echinodermata, Hemichordata
    • Chordata
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  • Morphology of Flowering Plants
    • The Root
    • Stem, Leaf, Inflorescence
    • The Flower, Fruit, Seed
    • Floral Formula and Important Families of Flowering Plants
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  • Anatomy of Flowering Plants
    • Meristematic Tissues and Permanent Tissues
    • The Tissue System
    • Anatomy of Dicotyledonous and Monocotyledonous Plants
    • Secondary Growth
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  • Structural Organisation in Animals
    • Animal Tissues
    • Earthworm
    • Cockroach
    • Frog
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  • Cell : The Unit of Life
    • Cell Theory, An Overview of Cells
    • Prokaryotic Cells
    • Eukaryotic Cells: Cell Membrane, Cell Wall
    • Eukaryotic Cells: Endomembrane System, Mitochondria, Plastids
    • Eukaryotic Cells: Ribosomes, Cytoskeleton, Cilia and Flagella
    • Eukaryotic Cells: Centrosome and Centrioles, Nucleus, Microbodies
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  • Biomolecules
    • Analysis of Chemical Composition of Biomolecules
    • Proteins and Structure of Proteins
    • Primary and Secondary Metabolites, Biomacromolecules
    • Concept of Metabolism, Metabolic Basis, The Living State
    • Bond Linking Monomers
    • Polysaccharides and Nucleic Acids
    • Enzymes
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  • Cell Cycle and Cell Division
    • Cell Cycle
    • Mitosis
    • Meiosis
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  • Transport in Plants
    • Diffusion and Active Transport
    • Plant-Water Relations: Water Potential, Osmosis, Plasmolysis, Imbibition
    • Translocation, Symplastic and Apoplastic Pathways
    • Transpiration, Root Pressure
    • Uptake and Transport of Mineral Nutrients
    • Phloem Transport: Mass Flow Hypothesis
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  • Mineral Nutrition
    • Mineral Requirement of Plants, Essential Mineral Elements
    • Deficiency Symptoms of Essential Elements, Toxicity of Micronutrients
    • Mechanism of Absorption of Elements
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  • Photosynthesis in Higher Plants
    • Photosynthesis: Experiments
    • Chloroplast and Chlorophyll
    • Light Reaction and Electron Transport
    • Biosynthetic Phase
    • C4 Pathway, Photorespiration
    • Factors Affecting Photosynthesis
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  • Respiration in Plants
    • Aerobic Respiration: Krebs Cycle
    • Introduction to Respiration, Glycolysis and Fermentation
    • Aerobic Respiration: Electron Transport System and Oxidative Phosphorylation
    • The Respiratory Balance Sheet, Amphibolic Pathway, Respiratory Quotient
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  • Plant Growth and Development
    • Plant Growth
    • Differentiation, Dedifferentiation, Redifferentiation and Development
    • Plant Growth Regulators, Photoperiodism, Vernalisation
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  • Digestion and Absorption
    • Digestion and Absorption of Food
    • Human Digestive System and its Disorders
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  • Breathing and Exchange of Gases
    • Regulation of Respiration, Respiratory Disorders
    • Mechanism of Breathing
    • Exchange and Transport of Gases
    • Respiratory Organs, Human Respiratory System
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  • Body Fluids and Circulation
    • Blood and Lymph
    • Circulatory Pathways: Human Circulatory System, Cardiac Cycle, ECG
    • Double Circulation, Regulation of Cardiac Activity, Disorders of Circulatory System
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  • Excretory Products and their Elimination
    • Modes of Excretion, Human Excretory System
    • Urine Formation, Functions of Tubules
    • Concentration of Filtrate, Regulation of Kidney Function, Micturition
    • Other Organs Involved in Excretion, Disorders of Excretory System
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  • Locomotion and Movement
    • Types of Movement, Muscle
    • Skeletal System and Joints
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  • Neural Control and Coordination
    • Neuron, Conduction and Transmission of Nerve Impulse
    • Central Nervous System, Reflex Action and Reflex Arc
    • The Eye
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  • Chemical Coordination and Integration
    • Introduction to Endocrine Glands and Hormones, Hypothalamus
    • The Pituitary and Pineal Glands
    • The Thyroid, Parathyroid and Thymus Glands
    • Adrenal Gland
    • Pancreas
    • Testis and Ovary
    • Hormones of Heart, Kidney, GI Tract
    • Mechanism of Hormone Action
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  • Biology Class 11

Biology Class 11 Solutions, MCQ, Notes, Book PDF Download

MCQ Biology Class 11

MCQ Biology Class 11

Solutions Biology Class 11

Question Answer Biology Class 11

Important Questions Biology Class 11

Important Questions Biology Class 11

Notes Biology Class 11

Notes Biology Class 11

Previous Year Question Paper Biology Class 11

Previous Year Question Paper Biology Class 11

Sample Papers Biology Class 11 FREE PDF Download

Sample Papers Biology Class 11

Syllabus Biology Class 11

Syllabus Biology Class 11

Book Biology Class 11 FREE PDF Download

Book Biology Class 11

Notes Class 11 Biology Chapter 18 Neural Control and Coordination

Notes For All Chapters Biology Class 11 CBSE The human body has several organs. These organs cannot perform their functions independently. In order to maintain homeostasis for the normal physiology of the human body, functions of these organs/organ systems in our body must be coordinated, so that they can work in proper manner. Topic 1 […]

Notes Class 11 Biology Chapter 17 Locomotion and Movement

Notes For All Chapters Biology Class 11 CBSE Topic 1 Musculature : Structure and Functions Movement Movement is defined as any visible change of position, exhibited either by the whole organism or any part of the body. It is one of the important characteristics of living organisms. The movement of living things are autonomic (self-sustained) […]

Notes Class 11 Biology Chapter 16 Excretory Products and their Elimination

Notes For All Chapters Biology Class 11 CBSE Excretion is the removal of nitrogenous waste products and other metabolites from the animal body which is normally associated with the process of maintenance of osmibtic concentrations, i.e., osmoregulation within the body. Both excretion and osmoregulation are important for the maintenance of homeostasis, i.e., for keeping the […]

Notes Class 11 Biology Chapter 15 Body Fluids and Circulation

Notes For All Chapters Biology Class 11 CBSE Each and every cell of a multicellular organism require food, oxygen and vital components to survive. Simultaneously as a result of metabolism, cell also produces some useful and waste products. Substances that are useful, are transported to other cells, while harmful or waste substances are removed from […]

Notes Class 11 Biology Chapter 14 Breathing and Exchange of Gases

Notes For All Chapters Biology Class 11 CBSE Cells continuously use oxygen (O2) for the catabolic reactions that releases energy from molecules, e.g., breakdown of nutrient molecules like glucose. Thus, O2 has to be provided to the cells constantly. Simultaneously, these reactions releases carbon dioxide (CO2), which is harmful, so it must be removed quickly and […]

Notes Class 11 Biology Chapter 16 Digestion and Absorption

Notes For All Chapters Biology Class 11 Topic 1 Digestion: The System and Associated Glands Animals depend on ready-made food for their nutritional requirements. Nutrition is a process by which animal obtain essential and non-essential substances called nutrients. The way by which organisms derive their nutrients is called mode of nutrition. It is mainly of […]

Notes Class 11 Biology Chapter 13 Plant Growth and Development

Notes For All Chapters Biology Class 11 CBSE All plant organs are made up of various kinds of tissues which occupy specific locations within an organ and perform specific designated functions. Thus, the development of a plant follows a very precise pattern, during this period complex body organisation is formed, i.e., produces, roots, leaves, branches, […]

Notes Class 11 Biology Chapter 12 Respiration in Plants

Notes For All Chapters Biology Class 11 CBSE All living organisms require a continuous supply of energy for their survival. Energy is used to carry out various functions such as uptake of materials, absorption, growth, development, movement and even breathing. About 50% of the energy produced by the cell is utilized by these cellular activities […]

Notes Class 11 Biology Chapter 11 Photosynthesis in Higher Plants

Notes For All Chapters Biology Class 11 CBSE All animals including human beings depend on plants for their food. Green plant synthesize the food they need, and for all other organisms depend on them for their needs. Green plants carry out photosynthesis, a physio-chemical processor which they use the light energy to derive the synthesis […]

Notes Class 11 Biology Chapter 12 Mineral Nutrition

Notes For All Chapters Biology Class 11 Topic 1 Minerals and Their Importance Living organisms require a number of macromolecules, such as carbohydrates, proteins, fats, water and minerals in order to grow and develop. Thus, the inorganic substances or minerals that provide nourishment to the living organisms or wftrk as a raw material for body […]

CBSE Delhi Question Answer of Chapters in PDF

Free Sample Papers and Previous Years' Question Papers for CBSE Exams from the Official CBSE Academic Website (CBSE.nic.in) in Delhi, Rajasthan, Uttar Pradesh and Bihar

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