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Class 11th Biology || Menu
  • MCQ Biology Class 11
  • Question Answer Biology Class 11
  • Important Questions Biology Class 11
  • Notes Biology Class 11
  • Previous Year Question Paper Biology Class 11
  • Sample Papers Biology Class 11
  • Syllabus Biology Class 11
  • Book Biology Class 11
  • 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

Biology Class 11 Question Answer Chapter 19 Chemical Coordination & Integration CBSE

Q1. Define the following: (a) Exocrine gland Exocrine glands are glands that have ducts and secrete their products onto an epithelial surface or into body cavities. Examples include salivary glands, sweat glands, and sebaceous glands. (b) Endocrine gland Endocrine glands are ductless glands that release hormones directly into the bloodstream, which then travel to target […]

Biology Class 11 Question Answer Chapter 18 Neural Control and Coordination CBSE

Q1. Briefly describe the structure of the brain. Answer :  The brain is the central information-processing organ of the body, protected by the skull and cranial meninges (dura mater, arachnoid, and pia mater). It has three major parts: 1. Forebrain The forebrain is the largest and most complex part of the brain, consisting of the […]

Biology Class 11 Solutions, MCQ, Notes, Book FREE 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 […]

Biology Class 11 Important Questions

Unit 1 – Diversity of Living Organism Chapter 1 The Living World Chapter 2 Biological Classification Chapter 3 Plant Kingdom Chapter 4 Animal Kingdom Unit 2 – Structural Organisation ion Plants and Animals Chapter 5 Morphology of Flowering Plants Chapter 6 Anatomy of Flowering Plants Chapter 7 Structural Organisation in Animals Unit 3 – Cell […]

CBSE Class 11 Biology Previous Year Question Papers PDF Download

2023-24 Biology Class 11 Unit Test Paper I – (2023-2024) Biology Class 11 Unit Test Paper II – (2023-2024) Biology Class 11  Term I Exam Question Paper – (2023- 2024) ↑ Solution Biology Class 11 Final Term Question Paper – (2023- 2024) ↑ Solution 2019-20 CBSE Class 11 Biology Year 2019 – 2020 2018-19 CBSE […]

Biology Class 11 Question Answer CBSE

Chapter 1 – The Living World Chapter 2 -Biological Classification Chapter 3 -Plant Kingdom Chapter 4 -Animal Kingdom Chapter 5 -Morphology of Flowering Plants Chapter 6 -Anatomy of Flowering Plants Chapter 7 -Structural Organisation in Animals Chapter 8 -Cell The Unit of Life Chapter 9 -Biomolecules Chapter 10 – Cell Cycle and Cell Division Chapter […]

Biology Class 11 NCERT Book PDF Download

NCERT Book for Class 11 Biology Unit 1: Diversity in the Living World Prelims Chapter 1- The Living World Chapter 2- Biological Classification Chapter 3- Plant Kingdom Chapter 4- Animal Kingdom Unit 2: Structural Organisation in Plants and Animals Chapter 5- Morphology of Flowering Plants Chapter 6- Anatomy of Flowering Plants Chapter 7- Structural Organisation […]

Class 11 Biology Syllabus PDF Download

Biology Syllabus Session 2018-19

Notes Class 11 Biology CBSE

Unit 1 – Diversity of Living Organism Chapter 1 The Living World Chapter 2 Biological Classification Chapter 3 Plant Kingdom Chapter 4 Animal Kingdom Unit 2 – Structural Organisation ion Plants and Animals Chapter 5 Morphology of Flowering Plants Chapter 6 Anatomy of Flowering Plants Chapter 7 Structural Organisation in Animals Unit 3 – Cell Structure […]

Notes Class 11 Biology Chapter 19 Chemical Coordination and Integration

Notes For All Chapters Biology Class 11 CBSE In the previous chapter, you have already learnt that the nervous system in the body, provides point-to-point coordination among the organs. The neural coordination is rapid, but short lived in nature. However, the nerve cells of not reach to each and every cell of the body. So, […]

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 […]

Notes Class 11 Biology Chapter 11 Transport in Plants

Notes For All Chapters Biology Class 11 In flowering plants, a complex movement of materials take place in different directions. This is despite the fact that plants do not bear any circulatory system. Water taken up by the roots has to reach all the parts of the plant, up to very tip of the growing […]

Notes Class 11 Biology Chapter 10 Cell Cycle and Cell Division

Notes For All Chapters Biology Class 11 CBSE Each and every organism begins its life from single cell and grows to form large organism. All living cells grow in size and reproduce by dividing into two daughter cells, i.e., each parental cell divide and give rise to two daughter cells each time it divide, which […]

Notes Class 11 Biology Chapter 9 Biomolecules

Notes For All Chapters Biology Class 11 CBSE A cell is composed of variety of molecules (like carbon, hydrogen, oxygen) which perform various functions. Other than these basic elements, some metals and non-metals are also present as cellular materials, thence, all these materials combines in different ways in order to form various biomolecules, which are […]

Notes Class 11 Biology Chapter 8 Cell The Unit of Life

Notes For All Chapters Biology Class 11 CBSE Topic 1 Cell :An Overview An organism consist of one or more cells, accordingly there are two types of organisms, i.e., unicellular (composed of single cell) and multi cellular (composed of many cells). Cell Theory The cell theory was formulated by two German Scientists, Matthias Schneider and […]

Notes Class 11 Biology Chapter 7 Structural Organisation in Animals

Notes For All Chapters Biology Class 11 CBSE Topic 1: Animal Tissues Tissue All cells are well organised and coordinated to work in a group. A group of similar cells along with intercellular substances perform a specific function, such an organisation is called tissue. The term ‘Tissue’ was introduced by Bichat and he is known […]

Notes Class 11 Biology Chapter 6 Anatomy of Flowering Plants

Notes For All Chapters Biology Class 11 CBSE This chapter introduces the internal structure and functional organisation of higher plants. The study of internal structure of plant is called anatomy. 1. Tissues and Tissue Systems The plants have cells as their basic unit. Compared to animal cells, plant cells have a cell wall consisting of […]

Notes Class 11 Biology Chapter 5 Morphology of Flowering Plants

Notes For All Chapters Biology Class 11 CBSE The angiosperms or flowering plants show a large diversity in external structure called as morphology (Gk. Morphe—form; logos—study). However, they all are characterised by the presence of roots, stems, leaves, flowers and fruits. 1. Flowering Plants The plant body consists of a main axis, which may be […]

Notes Class 11 Biology Chapter 4 Animal Kingdom

Notes For All Chapters Biology Class 11 CBSE There are over a million species of animals that have been described till now. These vast species have diverse structural forms. Therefore, the need for classification of animals becomes very important. 1. Animals : Features & Basis of Classification The classification helps in easy identification and also […]

Notes Class 11 Biology Chapter 3 Plant Kingdom

Notes For All Chapters Biology Class 11 CBSE 1.Basis of Classification and Algae, Bryophytes & Pteridophytes Our understanding of the plant kingdom has changed over time. Fungi and members of the Monera and Protista having cell walls have not been separated form Plantae, the earlier classifications kept them in the same kingdom. The kingdom-Plantae has […]

Notes Class 11 Biology Chapter 2 Biological Classification

Notes For All Chapters Biology Class 11 CBSE Biological classification is the scientific procedure of arranging organisms in a hierarchical series of groups and sub-groups on the basis of their similarities and dissimilarities. 1.Need of Classification There have been many attempts to classify living organisms since ancient times. Aristotle was the earliest to attempt a […]

The Living World Notes Chapter 1 Class 11 Biology

Notes For All Chapters Biology Class 11 CBSE 1.Living World: Characteristics The earth serves as a home for diverse living organisms. The organisms live in various habitats like forests, mountains, deserts, oceans, freshwater bodies, hot springs, polar regions and almost every place of the earth. Living things possess certain characteristics, which makes Some of these […]

MCQ Class 11 Biology

The Living World MCQ Chapter 1 Biology Class 11 Biological Classification MCQ Chapter 2 Biology Class 11 Plant Kingdom MCQ Chapter 3 Biology Class 11 Animal Kingdom MCQ Chapter 4 Biology Class 11 Morphology Of Flowering Plants MCQ Chapter 5 Biology Class 11 Anatomy Of Flowering Plants MCQ Chapter 6 Biology Class 11 Structural Organisation […]

Biology Class 11 Chapter 17 Question Answer CBSE

Locomotion and Movement Solutions For All Chapters Biology Class 11 Question Answer

Biology Class 11 Chapter 16 Question Answer CBSE

Excretory Products and their Elimination Solutions For All Chapters Biology Class 11 Question Answer

Biology Class 11 Chapter 15 Question Answer CBSE

Body Fluids and Circulation Solutions For All Chapters Biology Class 11 Question Answer
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