Biology | Class 9

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    Chapter 1 Introduction To Biology ( 20 videos)  (Practice Test)

      1.1: Divisions And Branches of Biology (Practice Test)
      Introduction to Biology
    1. Introduction to Biology
      65455 views
      2. Zoology, Botany, Microbiology
    2. Zoology, Botany, Microbiology
      30244 views
      3. Morphology, Anatomy and Physiology
    3. Morphology, Anatomy and Physiology
      11586 views
      4. Cell Biology and Histology
    4. Cell Biology and Histology
      7585 views
      5. Genetics and Embryology
    5. Genetics and Embryology
      7526 views
      6. Environmental Biology, Taxonomy and Palaeontology
    6. Environmental Biology, Taxonomy and Palaeontology
      7251 views
      7. Sociobiology and Parasitology
    7. Sociobiology and Parasitology
      4154 views
      8. Biotechnology and Biochemistry
    8. Biotechnology and Biochemistry
      4004 views
      9. Immunology, Entomology, Pharmacology
    9. Immunology, Entomology, Pharmacology
      3194 views
      10. Relationship of Different Branches of Science
    10. Relationship of Different Branches of Science
      8888 views
      11. More on Biology and Other Science
    11. More on Biology and Other Science
      5505 views
      12. Muslim Scientists (Kidney)
    12. Muslim Scientists (Kidney)
      1936 views
      13. Muslim Scientists (Eye)
    13. Muslim Scientists (Eye)
      1222 views
      1.2: The Levels of Organization (Practice Test)
      Levels of Organization
    1. Levels of Organization
      9643 views
      2. Subatomic and Atomic Level, Molecular Level
    2. Subatomic and Atomic Level, Molecular Level
      12974 views
      3. Organelle, Cell and Tissue Level
    3. Organelle, Cell and Tissue Level
      9099 views
      4. Organ and Organ System Level
    4. Organ and Organ System Level
      8716 views
      5. Individual, Population, Community and Biosphere Level
    5. Individual, Population, Community and Biosphere Level
      6670 views
      6. Cellular Organization
    6. Cellular Organization
      7950 views
      7. Multicellular Organisms
    7. Multicellular Organisms
      3846 views

    Chapter 2 Solving A Biological Problem ( 6 videos)  (Practice Test)

      2.1: Biological Method (Practice Test)
      Biological Method
    1. Biological Method
      24526 views
      2. More on Biological Method
    2. More on Biological Method
      12596 views
      3. Law, Principles
    3. Law, Principles
      6279 views
      4. Study of Malaria
    4. Study of Malaria
      7761 views
      5. More Study of Malaria
    5. More Study of Malaria
      4085 views
      6. Data Organization and Analysis
    6. Data Organization and Analysis
      5262 views

    Chapter 3 Biodiversity ( 19 videos)  (Practice Test)

      3.1: Definition And Introduction of Biodiversity (Practice Test)
      Biodiversity and its Importance
    1. Biodiversity and its Importance
      14547 views
      3.2: Aims And Principles of Classification (Practice Test)
      Aims and Basis of Classification
    1. Aims and Basis of Classification
      12075 views
      2. Taxonomic Hierarchy
    2. Taxonomic Hierarchy
      13440 views
      3. Species - The Basic Unit of Classification
    3. Species - The Basic Unit of Classification
      3.3: History of Classification (Practice Test)
      Two Kingdom Classification System
    1. Two Kingdom Classification System
      9650 views
      2. Three Kingdom Classification System
    2. Three Kingdom Classification System
      7821 views
      3. Five Kingdom Classification System
    3. Five Kingdom Classification System
      20175 views
      3.4: The Five Kingdoms (Practice Test)
      Five Kingdom Classification System
    1. Five Kingdom Classification System
      20175 views
      2. Basis of Five Kingdom Classification System
    2. Basis of Five Kingdom Classification System
      3. More on Five Kingdom Classification System
    3. More on Five Kingdom Classification System
      1829 views
      4. Status of Viruses
    4. Status of Viruses
      9055 views
      3.5: Binomial Nomenclature (Practice Test)
      Binomial Nomenclature
    1. Binomial Nomenclature
      6877 views
      3.6: Conservation of Biodiversity (Practice Test)
      Conservation of Biodiversity, Endangered Species in Pakistan
    1. Conservation of Biodiversity, Endangered Species in Pakistan
      4067 views
      2. Conservation of Biodiversity
    2. Conservation of Biodiversity
      842 views
      3. Conservation of Wildlife
    3. Conservation of Wildlife
      656 views
      4. Reasons for the Conservation of Biodiversity
    4. Reasons for the Conservation of Biodiversity
      693 views
      5. Issues and Importance of Conservation of Biodiversity
    5. Issues and Importance of Conservation of Biodiversity
      6. Deforestation, Soil Erosion
    6. Deforestation, Soil Erosion
      2459 views
      7. Endangered Species
    7. Endangered Species
      1933 views

    Chapter 4 Cells And Tissues ( 39 videos)  (Practice Test)

      4.1: Microscope And Emergence of Cell Theory (Practice Test)
      Light Microscope
    1. Light Microscope
      12496 views
      2. Electron Microscope
    2. Electron Microscope
      10876 views
      4.2: History of The Development of Cell Theory (Practice Test)
      formulation of Cell Theory
    1. formulation of Cell Theory
      15087 views
      2. Status of Viruses
    2. Status of Viruses
      9055 views
      3. Cell
    3. Cell
      7353 views
      4. Difference between Prokaryotic and Eukaryotic Cells
    4. Difference between Prokaryotic and Eukaryotic Cells
      13699 views
      5. More Difference Between Prokaryotic and Eukaryotic Cells
    5. More Difference Between Prokaryotic and Eukaryotic Cells
      6215 views
      6. Difference Between Plant and Animal Cell
    6. Difference Between Plant and Animal Cell
      2077 views
      7. Cell wall
    7. Cell wall
      36672 views
      8. Cell Membrane
    8. Cell Membrane
      24850 views
      9. Application of Knowledge About Semi-Permeable Membranes
    9. Application of Knowledge About Semi-Permeable Membranes
      1958 views
      10. Diffusion and Facilitated Diffusion
    10. Diffusion and Facilitated Diffusion
      8261 views
      11. Osmosis
    11. Osmosis
      6053 views
      12. Water Balance Problems
    12. Water Balance Problems
      4147 views
      13. Passive Transport and Active Transport
    13. Passive Transport and Active Transport
      6121 views
      14. Cytoplasm, Cytoskeleton
    14. Cytoplasm, Cytoskeleton
      17752 views
      15. Nucleus
    15. Nucleus
      17830 views
      16. Mitochondria
    16. Mitochondria
      15515 views
      17. Plastids
    17. Plastids
      13337 views
      18. Endoplasmic Reticulum (ER), Ribosomes
    18. Endoplasmic Reticulum (ER), Ribosomes
      14548 views
      19. Golgi Apparatus and Lysosomes
    19. Golgi Apparatus and Lysosomes
      22182 views
      20. Vacuoles
    20. Vacuoles
      11106 views
      21. Centrioles
    21. Centrioles
      17135 views
      4.3: Cell Size And Shape As They Relate To Surface Area To Volume Ratio
      Relationship b/w Cell Structure and Function
    1. Relationship b/w Cell Structure and Function
      2541 views
      2. Cell Size and Surface Area to Volume Ratio
    2. Cell Size and Surface Area to Volume Ratio
      4.4: Animal And Plant Tissues (Practice Test)
      Animal and Plant Tissues
    1. Animal and Plant Tissues
      4313 views
      2. Epithelial Tissues (Animals Tissues)
    2. Epithelial Tissues (Animals Tissues)
      7670 views
      3. Connective Tissues
    3. Connective Tissues
      5051 views
      4. Connective Tissues And Nervous Tissues
    4. Connective Tissues And Nervous Tissues
      5. Cartilages
    5. Cartilages
      6653 views
      6. Bones
    6. Bones
      10019 views
      7. Muscle Tissues
    7. Muscle Tissues
      3625 views
      8. Neuron
    8. Neuron
      639 views
      9. The Nervous System
    9. The Nervous System
      429 views
      10. Plant Tissues, Simple and Compound Tissues
    10. Plant Tissues, Simple and Compound Tissues
      5055 views
      11. Meristematic Tissues
    11. Meristematic Tissues
      4358 views
      12. Permanent Tissues
    12. Permanent Tissues
      3534 views
      13. More on Permanent Tissues
    13. More on Permanent Tissues
      2449 views
      14. Compound Tissues
    14. Compound Tissues
      3280 views

    Chapter 5 Cell Cycle ( 15 videos)  (Practice Test)

      5.1: Chromosomes (Practice Test)
      Gene and Genome, Chromosome, Chromatin
    1. Gene and Genome, Chromosome, Chromatin
      11553 views
      2. Types of Chromosomes
    2. Types of Chromosomes
      14095 views
      3. Composition of Chromosome
    3. Composition of Chromosome
      25284 views
      5.2: Cell Cycle (Practice Test)
      Cell Cycle
    1. Cell Cycle
      20785 views
      5.3: Mitosis (Practice Test)
      Mitosis, Prophase
    1. Mitosis, Prophase
      30609 views
      2. Anaphase, Telophase of Mitosis
    2. Anaphase, Telophase of Mitosis
      16891 views
      3. More on Mitosis, Cytokinesis
    3. More on Mitosis, Cytokinesis
      10975 views
      4. Significance of Mitosis
    4. Significance of Mitosis
      10862 views
      5.4: Apoptosis And Necrosis (Two Ways of Cell Death)
      Apoptosis and Necrosis
    1. Apoptosis and Necrosis
      2655 views
      5.5: Meiosis (Reduction Division) (Practice Test)
      Meiosis-I, Prophase I
    1. Meiosis-I, Prophase I
      13659 views
      2. Meiosis I (Prophase I)
    2. Meiosis I (Prophase I)
      8802 views
      3. Metaphase I, Anaphase I and Telophase I
    3. Metaphase I, Anaphase I and Telophase I
      15853 views
      4. Meiosis-II
    4. Meiosis-II
      7798 views
      5. Significance of Meiosis
    5. Significance of Meiosis
      8647 views
      6. Comparison of Mitosis and Meiosis
    6. Comparison of Mitosis and Meiosis
      3684 views

    Chapter 6 Enzymes ( 7 videos)  (Practice Test)

      6.1: Definition (Practice Test)
      Enzymes
    1. Enzymes
      21151 views
      6.2: Characteristics of Enzymes (Practice Test)
      Characteristics of Enzymes
    1. Characteristics of Enzymes
      8195 views
      2. Uses of Enzymes
    2. Uses of Enzymes
      4621 views
      3. Factors Affecting the Rate of Enzyme Action
    3. Factors Affecting the Rate of Enzyme Action
      7365 views
      6.3: Mechanism of Enzyme Action
      Lock and Key Model
    1. Lock and Key Model
      9839 views
      2. Induced Fit Model of Enzyme Action
    2. Induced Fit Model of Enzyme Action
      2579 views
      6.4: Specificity of Enzymes
      Specificity of Enzymes
    1. Specificity of Enzymes
      6045 views

    Chapter 7 Bioenergetics ( 21 videos)  (Practice Test)

      7.1: Bioenergetics And Role of ATP (Practice Test)
      Basic Introduction (Bioenergetics)
    1. Basic Introduction (Bioenergetics)
      10345 views
      2. Oxidation-Reduction Reactions
    2. Oxidation-Reduction Reactions
      8855 views
      3. Role of ATP as Energy Currency
    3. Role of ATP as Energy Currency
      11149 views
      7.2: Photosynthesis (Practice Test)
      Photosynthesis
    1. Photosynthesis
      3647 views
      2. More on Photosynthesis
    2. More on Photosynthesis
      1723 views
      3. Mechanism of Photosynthesis
    3. Mechanism of Photosynthesis
      3167 views
      4. Role of Chlorophyll and Light
    4. Role of Chlorophyll and Light
      8955 views
      5. Light Reaction of Photosynthesis
    5. Light Reaction of Photosynthesis
      5894 views
      6. Cyclic Phosphorylation
    6. Cyclic Phosphorylation
      15873 views
      7. Non Cyclic Phosphorylation
    7. Non Cyclic Phosphorylation
      24623 views
      8. More on Dark Reaction
    8. More on Dark Reaction
      4428 views
      9. Limiting Factors in Photosynthesis
    9. Limiting Factors in Photosynthesis
      3961 views
      7.3: Respiration (Practice Test)
      Need for Energy in Living Organisms
    1. Need for Energy in Living Organisms
      1942 views
      2. Anaerobic Respiration
    2. Anaerobic Respiration
      9665 views
      3. Types of Fermentation
    3. Types of Fermentation
      7026 views
      4. Aerobic Respiration
    4. Aerobic Respiration
      6500 views
      5. Glycolysis
    5. Glycolysis
      5679 views
      6. Krebs Cycle
    6. Krebs Cycle
      6354 views
      7. Components of Electron Transport Chain
    7. Components of Electron Transport Chain
      8. The Energy Budget of Respiration
    8. The Energy Budget of Respiration
      7883 views
      9. Comparison of Photosynthesis and Respiration
    9. Comparison of Photosynthesis and Respiration
      3194 views

    Chapter 8 Nutrition ( 40 videos)  (Practice Test)

      8.1: Nutrition in Plants (Practice Test)
      Basic Definitions
    1. Basic Definitions
      3889 views
      2. Autotrophic and Heterotrophic Nutrition
    2. Autotrophic and Heterotrophic Nutrition
      10806 views
      3. Photosynthesis
    3. Photosynthesis
      3647 views
      4. More on Heterotrophic Nutrition, Parasitic and Saprophytic Nutrition
    4. More on Heterotrophic Nutrition, Parasitic and Saprophytic Nutrition
      2483 views
      5. Insectivorous Plants and Symbionts
    5. Insectivorous Plants and Symbionts
      3259 views
      6. Filter Feeders, Fluid Feeders and Macrophagous Feeder
    6. Filter Feeders, Fluid Feeders and Macrophagous Feeder
      7. Ingestion and Absorption
    7. Ingestion and Absorption
      8. Minerals Requirement in Plants
    8. Minerals Requirement in Plants
      3357 views
      9. Micronutrients and Macronutrients
    9. Micronutrients and Macronutrients
      7599 views
      10. Role of Nitrogen and Magnesium
    10. Role of Nitrogen and Magnesium
      5172 views
      11. Importance of Fertilizers
    11. Importance of Fertilizers
      4217 views
      12. Carbohydrates
    12. Carbohydrates
      3936 views
      13. Proteins
    13. Proteins
      4718 views
      14. Fatty Acids to Lipids
    14. Fatty Acids to Lipids
      951 views
      15. Fatty Acids and Glycerol to Lipids
    15. Fatty Acids and Glycerol to Lipids
      2055 views
      16. Vitamin A
    16. Vitamin A
      3466 views
      17. Vitamin C and D
    17. Vitamin C and D
      2591 views
      18. Water and Dietary Fiber
    18. Water and Dietary Fiber
      3963 views
      19. Minerals
    19. Minerals
      1917 views
      20. Role of Calcium and Iron
    20. Role of Calcium and Iron
      2659 views
      8.2: Balanced Diet Is Related To Age, Sex And Activity (Practice Test)
      A Balance Diet
    1. A Balance Diet
      2452 views
      2. Food Pyramids
    2. Food Pyramids
      3. Causes of Malnutrition, Protein-Energy Malnutrition
    3. Causes of Malnutrition, Protein-Energy Malnutrition
      2683 views
      4. Protein - Energy Malnutrition
    4. Protein - Energy Malnutrition
      6981 views
      5. Mineral Deficiency Diseases
    5. Mineral Deficiency Diseases
      2625 views
      6. Over-nutrition
    6. Over-nutrition
      1824 views
      7. Effects of Malnutrition
    7. Effects of Malnutrition
      1810 views
      8. Famine
    8. Famine
      1566 views
      8.3: The Digestive System of Human (Practice Test)
      Digestion in Human
    1. Digestion in Human
      9054 views
      2. Human Alimentary Canal
    2. Human Alimentary Canal
      5890 views
      3. Digestion in Oral Cavity
    3. Digestion in Oral Cavity
      8759 views
      4. Digestion in Pharynx and Oesophagus
    4. Digestion in Pharynx and Oesophagus
      6713 views
      5. Human Digestive System (Stomach and Small Intestine)
    5. Human Digestive System (Stomach and Small Intestine)
      6. Digestion in Stomach
    6. Digestion in Stomach
      11097 views
      7. Digestion in Small Intestine
    7. Digestion in Small Intestine
      8002 views
      8. More on Digestion and Absorption of Food in the Small Intestine
    8. More on Digestion and Absorption of Food in the Small Intestine
      3743 views
      9. Digestion in Large Intestine
    9. Digestion in Large Intestine
      6785 views
      10. Role of Liver in Digestion
    10. Role of Liver in Digestion
      6945 views
      8.4: Disorders of Gut (Practice Test)
      Diarrhoea and Vomiting
    1. Diarrhoea and Vomiting
      3679 views
      2. Constipation, Ulcer
    2. Constipation, Ulcer
      2885 views

    Chapter 9 Transport ( 32 videos)  (Practice Test)

      9.1: Transport In Plants (Practice Test)
      The Need for Transport System
    1. The Need for Transport System
      2. Water in Plants
    2. Water in Plants
      605 views
      3. Transport of Water
    3. Transport of Water
      4. Absorption by Roots
    4. Absorption by Roots
      5. Uptake of Water by Roots and Pathways
    5. Uptake of Water by Roots and Pathways
      3614 views
      9.2: Transpiration (Practice Test)
      Transpiration
    1. Transpiration
      4807 views
      2. Opening and Closing of Stomata, Influx of K+ Ions
    2. Opening and Closing of Stomata, Influx of K+ Ions
      1837 views
      3. Significance of Transpiration
    3. Significance of Transpiration
      4220 views
      4. Factors Affecting the Rate of Transpiration
    4. Factors Affecting the Rate of Transpiration
      5640 views
      9.3: Transport of Water And Food In Stem (Practice Test)
      Transport of Water
    1. Transport of Water
      4618 views
      2. Transport of Food
    2. Transport of Food
      8089 views
      9.4: Transport In Animals (Practice Test)
      General Characteristics of Circulatory System
    1. General Characteristics of Circulatory System
      1216 views
      2. Difference Between Open and Closed Circulatory System
    2. Difference Between Open and Closed Circulatory System
      17713 views
      9.5: Transport In Man (Practice Test)
      Blood, Blood Plasma
    1. Blood, Blood Plasma
      5759 views
      2. Blood Cells
    2. Blood Cells
      4336 views
      3. White Blood Cells and Platelets
    3. White Blood Cells and Platelets
      5143 views
      4. Blood Disorders, Anaemia, Haemophilia
    4. Blood Disorders, Anaemia, Haemophilia
      3401 views
      5. Leukemia
    5. Leukemia
      1348 views
      6. Thalassemia
    6. Thalassemia
      1651 views
      7. Human Heart
    7. Human Heart
      18062 views
      8. Circulation of Blood Inside Heart
    8. Circulation of Blood Inside Heart
      5994 views
      9. More on Structure of Human Heart
    9. More on Structure of Human Heart
      2938 views
      10. More on Structure of Human Heart
    10. More on Structure of Human Heart
      2229 views
      11. More on Pulmonary Circulation
    11. More on Pulmonary Circulation
      599 views
      12. More on Systemic Circulation
    12. More on Systemic Circulation
      530 views
      13. Heartbeat
    13. Heartbeat
      5655 views
      14. Comparison of Arteries, Capillaries and Veins
    14. Comparison of Arteries, Capillaries and Veins
      3363 views
      15. Arterial System
    15. Arterial System
      6883 views
      16. Venous System
    16. Venous System
      4938 views
      17. Atherosclerosis and Arteriosclerosis
    17. Atherosclerosis and Arteriosclerosis
      5897 views
      18. Myocardial Infarction
    18. Myocardial Infarction
      2775 views
      19. Myocardial Infarction
    19. Myocardial Infarction
      758 views