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Biology | Class 12
Punjab
Class 12
Biology (
Total Videos: 469
)
Preference
All Chapters
Chapter 15: Homeostasis
Chapter 16: Support And Movement
Chapter 17: Coordination And Control
Chapter 18: Reproduction
Chapter 19: Growth And Development
Chapter 20: Chromosomes And DNA
Chapter 21: Cell Cycle
Chapter 22: Variation And Genetics
Chapter 23: Biotechnology
Chapter 24: Evolution
Chapter 25: Ecosystem
Chapter 26: Some Major Ecosystems
Chapter 27: Man And His Environment
Show Content
Select a chapter above and press 'Show Content'. Click a video topic below to view.
Chapter 15 Homeostasis (
45 videos
)
  (
Practice Test
)
15.1: Concepts in Homeostasis (
Practice Test
)
Osmoregulation, Thermoregulation and Excretion
29601 views
15.2: Osmoregulation (
Practice Test
)
Balance of Water and Solutes in Body
2030 views
Hydrophytes and Halophytes
13556 views
Mesophytes
924 views
Osmoregulation in Animals
17204 views
Osmoregulation in Different Environments
12639 views
Marine Environment
8056 views
Terrestrial Environment
5959 views
15.3: Excretion (
Practice Test
)
Excretion in Plants
15550 views
Excretion in Animals
9564 views
Nature of Excretory Products in Relation to Habitats
7312 views
Uric Acid
6574 views
Urea
5312 views
15.4: Excretion In Representative Animals (
Practice Test
)
Excretion in Hydra
6118 views
Excretory Organ in Planaria
10704 views
Excretory Organ in Earthworm
12112 views
Excretory Organ in Cockroach
12335 views
15.5: Excretion in Vertebrates (
Practice Test
)
Excretory System
7212 views
Excretory Organs, Liver
8840 views
Excretory Organs in Vertebrates, Nephrons, Kidney
6528 views
Urinary System
9245 views
Structure of Kidney
49113 views
Nephron
11277 views
Blood Circulation to Nephron
6650 views
Types of Nephron
7109 views
Role of Kidney
27826 views
Function of Kidney
9917 views
Effects of Hormones on The Working of Kidney
4107 views
Urea Formation, Kidney Filtration
3968 views
Concentration of Excretory Product
4743 views
Kidney as Osmoregulatory Organ
12046 views
Formation of Stones in Kidney
4168 views
Lithotripsy
3666 views
Renal Failure
13435 views
Peritoneal Dialysis
20631 views
Kidney Transplant
5706 views
Treatment of Malfunctioned Kidneys
2333 views
15.6: Thermoregulation (
Practice Test
)
Adaptations in Plants to High Temperature
1012 views
Adaptations in Plants to Low Temperature
920 views
15.7: Mechanism In Animals (
Practice Test
)
Temperature Classification of Animals
6239 views
Classification of Animals on the Basis of Heat Production
Regulation of Heat Exchange Between Animals and Environment
4544 views
15.8: Thermoregulation in Mammals(Human) (
Practice Test
)
Regulatory Strategies
3674 views
Thermostat Function and Feedback Controls in Human and Fever
3770 views
Pyrexia and Pyrogens
3910 views
Chapter 16 Support And Movement (
73 videos
)
  (
Practice Test
)
16.1: Concept And Need
Support, Movement and Locomotion
5709 views
16.2: Support in Plants (
Practice Test
)
Support in Plants
Collenchyma Tissues
14321 views
Sclerenchyma Tissues
8400 views
Secondary Growth
6209 views
Heart Sap Wood
2920 views
16.3: Movements in Plants (
Practice Test
)
Types of Movements
4799 views
Tactic Movements
6942 views
Tactic Movements
481 views
Thermotaxis and Chemotaxis
2471 views
Turgor Movements
5076 views
Growth Movements
3793 views
Tropic Movements
5322 views
More on Tropic Movements
1287 views
Geotropism and Hydrotropism
4336 views
Nastic Movement
4198 views
Types of Nastic Movement
6304 views
More on Nastic Movements
1197 views
16.4: Role of Plant Growth Substance In Plant Movement (
Practice Test
)
Role of Plant Growth Substance in Plant Movements
2993 views
16.5: Support And Movements In Animals (
Practice Test
)
Support and Locomotion in Animals
3182 views
Hydrostatic Skeleton
9873 views
Exoskeleton
6196 views
Ecdysis
3621 views
Function of Skeletal System
2927 views
Endoskeleton
3406 views
Bones
10019 views
Cartilages
6653 views
16.6: Human Skeleton (
Practice Test
)
Human Skeleton, Axial Skeleton
38474 views
Skull
3485 views
Ribs
2583 views
Vertebral Column
9 views
Appendicular Skeleton
3189 views
Pelvic Girdle
3262 views
Hind Limb
More on Joints
3205 views
Types of Joints
11695 views
Synovial Joint
4692 views
16.7: Deformities of Skeleton (
Practice Test
)
Genetic Causes
3619 views
Hormonal Causes of Skeleton Deformities
3743 views
Nutritional Causes
1469 views
Disc-Slip
6459 views
Spondylosis
3761 views
Sciatica
4201 views
Arthritis and Its Types
5826 views
Arthritis and Its Types
1679 views
16.8: Repair of Broken Bones
Repair of Broken Bones
8478 views
16.9: Muscles (
Practice Test
)
Muscular System
4186 views
Smooth and Cardiac Muscles
4437 views
Skeletal Muscles, Skeletal Muscle Fibre
12189 views
More on Skeletal Muscles, Skeletal Muscle Fibre
8763 views
Ultrastructure of Myofilament
6912 views
Sliding Filament Model
8807 views
How Bridges are Controlled?
5968 views
Controlling the Actin-Myosin Interaction by Ca++ Ions
11088 views
Energy for Muscle Contraction
6576 views
Tetany and Cramp
14328 views
16.10: Arrangement of Skeletal Muscles for Movement of Skeleton (
Practice Test
)
Origin, Insertion, Belly, Ligaments and Tendons
3142 views
Muscles and Movements
7571 views
Arrangement of Skeletal Muscles for Skeletal Movement
4024 views
16.11: Locomotion In Protoctista And Invertebrates (
Practice Test
)
Locomotion In Euglena
9644 views
Locomotion In Amoeba
7958 views
More on Locomotion in Euglena and Amoeba
3005 views
Locomotion In Paramecium
9612 views
More on Locomotion in Paramecium
5511 views
Locomotion in Jelly Fish and Earthworm
7744 views
Locomotion in Cockroach
6762 views
Locomotion in Star Fish and Snail
9389 views
16.12: Locomotion And Skeleton in Vertebrates (
Practice Test
)
Locomotion in Fish
8395 views
Locomotion in Amphibian
4649 views
Locomotion in Reptiles
4041 views
Locomotion in Air
4142 views
Locomotion in Mammals
3630 views
Evolutionary Changes in The Arrangement of Bones
Chapter 17 Coordination And Control (
56 videos
)
  (
Practice Test
)
17.1: Introduction (
Practice Test
)
Stimuli, Receptors, Effectors, Response
16832 views
17.2: Coordination In Plants
Control Through Hormones in Plants
4224 views
17.3: Plants Movements
Types of Movements
4799 views
17.4: Responses To Environmental Stresses In Plants (
Practice Test
)
Responses to Environmental Stresses
3740 views
17.5: Defense Against Pathogens in Plants
Defense Against Pathogens in Plants
2811 views
17.6: Biological Clocks and Circadian Rhythms
Biological Clocks and Circadian Rhythms
11435 views
17.7: Plant Hormones (
Practice Test
)
Auxins and Gibberellins
8872 views
Cytokinin, Abscisic Acid and Ethylene
4923 views
17.8: Coordination In Animals
Types of Coordination
5018 views
17.9: Nervous Coordination (
Practice Test
)
Steps Involved in Coordination
3863 views
Coordinators, Effectors and Response
5570 views
Working of Sensory Receptors With Special Reference to Skin
4786 views
Nerve cell or Neuron
14832 views
Nerve Types
6815 views
Neuron Types
10302 views
Nervous Tissue
3224 views
Reflex Action
10745 views
Nerve Impulse
12246 views
Generation and Transmission of Nerve Impulse
Synapse
11029 views
17.10: 17Evolution of Nervous System (
Practice Test
)
Evolution of Nervous System
5548 views
Nervous System of Hydra
5490 views
Nervous System of Planaria
2454 views
17.11: Human Nervous System (
Practice Test
)
The Divisions of Brain, Forebrain
10596 views
The Divisions of Brain, Forebrain
38557 views
Midbrain and Hindbrain
11262 views
Spinal Cord
13955 views
Spinal Cord
4313 views
Peripheral Nervous System
29672 views
More on Peripheral Nervous System
2975 views
Peripheral Nervous System (PNS)
6602 views
More on Peripheral Nervous System (PNS)
4203 views
17.12: Nervous Disorders (
Practice Test
)
Parkinson's Disease
2833 views
Epilepsy
2577 views
Alzheimer's Disease
3664 views
Effects of Drugs On Nervous Coordination
17.13: Chemical Coordination (
Practice Test
)
Important endocrine gland
9123 views
Mode of Hormone Action
4163 views
17.14: Endocrine Glands of Mammals (
Practice Test
)
Pituitary Gland
7291 views
Pituitary's Median Lobe and Posterior Lobe
4164 views
Thyroid Gland
10441 views
Parathyroid
7905 views
Pancreas
10728 views
Adrenal Gland
9392 views
Disorders of Medullary and Cortical Hormones
Gut
Gonads
8639 views
17.15: Feed Back Mechanism
Feedback Mechanism
11601 views
Comparison of Nervous Coordination and Chemical Coordination
17.16: Behavior (
Practice Test
)
Innate Behaviour
11098 views
More on Non-Orientation Behaviour
3243 views
Non - Orientation Behaviour
5102 views
Learning
13699 views
More on Learning
6450 views
Social Behaviour
5783 views
More on Social Behaviour
4261 views
Chapter 18 Reproduction (
28 videos
)
  (
Practice Test
)
18.1: Reproduction (
Practice Test
)
Reproduction, Asexual and Sexual reproduction
11247 views
18.2: Reproduction In Plants (
Practice Test
)
Reproduction in Plants
7625 views
Life Cycle of Moss
10284 views
Life Cycle of Pinus
Life Cycle of a Flowering Plant
3006 views
Parthenocarpy
16333 views
Seed Dormancy
23099 views
Fruit Ripening
4605 views
Photoperiodism
1909 views
Mechanism of Photoperiodism
1342 views
Vernalization
3429 views
18.3: Reproduction In Animals (
Practice Test
)
Regeneration and Parthenogenesis
3872 views
18.4: Tissue Culturing And Cloning (
Practice Test
)
Tissue Culturing and Cloning
8030 views
18.5: Identical Twins
Identical Twins
18.6: Sexual Reproduction (
Practice Test
)
Mating and Fertilization
3678 views
Fertilization
2049 views
Oviparity and Viviparity
18.7: Reproduction In Man (
Practice Test
)
Male Reproductive System
15700 views
More on Structure of Male Reproductive System
6253 views
Function of Male Reproductive System
5346 views
Hormonal Control of Male Reproductive System
5499 views
Female Reproductive System
15779 views
Function of Female Reproductive System
8878 views
Menstrual Cycle
14343 views
Hormonal Control of Reproductive Cycles
6842 views
18.8: Test Tube Babies
Treatment of Infertility (In Vitro Fertilization)
18.9: Sexually Transmitted Diseases (STD) (
Practice Test
)
AIDS, A Sexually Transmitted Disease
7203 views
Gonorrhea and Syphilis
Chapter 19 Growth And Development (
23 videos
)
  (
Practice Test
)
19.1: Growth And Development In Plants (
Practice Test
)
From Seed to Seedling
3766 views
Apical Meristems, Intercalary Meristems and Lateral Meristems
4073 views
Phases of Growth
5958 views
Secondary Growth
6209 views
Condition of Growth
3860 views
Growth Correlation in Plants
19.2: Growth And Development In Animals (
Practice Test
)
Growth and Development in Animals
6203 views
Development of Chick (Fertilization and Incubation)
18342 views
Cleavage, Morula
11172 views
Blastula and Gastrulation
23834 views
Notochord and Mesoderm Formation
25204 views
Neurulation
14420 views
Hans Spemann's Experiment
8604 views
Roux-Weismann Hypothesis and Hans Driesch's Experiment
4013 views
Role of Cytoplasm in Development
8490 views
Role of Nucleus in Development
8441 views
Cell Differentiation and Its Mechanism
9336 views
Embryonic Induction Experiment No. 1
18497 views
Embryonic Induction (Second Experiment)
9140 views
Embryonic Induction (Third Experiment)
16145 views
19.3: Aging
Signs And Symptoms of Aging
19.4: Regeneration (
Practice Test
)
Regeneration and Parthenogenesis
3872 views
19.5: Abnormal Development (
Practice Test
)
Abnormal Development
2295 views
Chapter 20 Chromosomes And DNA (
43 videos
)
  (
Practice Test
)
20.1: Chromosomes
Organisms Have Number of Chromosomes Specific to Their Species
4415 views
20.2: Types of Chromosomes (
Practice Test
)
Gene and Genome, Chromosome, Chromatin
11553 views
Types of Chromosomes
14095 views
Number and Structure of Chromosome
14313 views
20.3: Composition of Chromosome (
Practice Test
)
Composition of Chromosome
25284 views
20.4: The Chromosomal Theory of Inheritance (
Practice Test
)
The Chromosomal Theory of Inheritance
27027 views
20.5: DNA As Hereditary Material (
Practice Test
)
Gamete - A Vehicle of Inheritance
4638 views
DNA as Hereditary Material, Vehicle
13921 views
More on DNA as Hereditary Material, Vehicle
10170 views
Mononucleotide
7630 views
Nucleotide and Polynucleotide
9057 views
Comparison of DNA and RNA
2458 views
Significance of Base Sequence
2304 views
Watson-Crick Model of DNA
65841 views
Types of Replication
5830 views
Replication of DNA
16059 views
DNA Replication in Prokaryotes and Eukaryotes
4152 views
The Meselson-Stahl Experiment
13174 views
Mechanism of DNA Replication
33400 views
More on Mechanism of DNA Replication
11768 views
20.6: What Is A Gene? (
Practice Test
)
What is a Gene?
7532 views
Chromosomes, Genes and DNA
14952 views
Structure of a Gene
18435 views
Genes and Enzymes
2311 views
Experiment of Beadle and Tatum on Neurospora
17395 views
One-Gene/One-Polypeptide
7333 views
How Does the DNA of Chromosome work?
7297 views
Translation
15338 views
20.7: Cells Use RNA To Make Protein (
Practice Test
)
Types of RNA
13828 views
Transcription
18325 views
Advance Transcription
4411 views
More on Transcription
9405 views
Post-Transcriptional Modification of mRNA
6465 views
Difference Between Translation in Prokaryotes and Eukaryotes
2160 views
20.8: Genetic Code (
Practice Test
)
Genetic Code
5380 views
20.9: Translation (
Practice Test
)
Translation
15338 views
Translation, Protein Synthesis
6024 views
More on Translation, Protein Synthesis
3969 views
20.10: Mutations (
Practice Test
)
Mutations
6593 views
Importance of Mutation
2822 views
Chromosomal Mutations
5795 views
Chromosomal Mutations (Turner Syndrome)
4338 views
Point Mutation/Gene Mutations
2870 views
Chapter 21 Cell Cycle (
17 videos
)
  (
Practice Test
)
21.1: Introduction of Cell Cycle (
Practice Test
)
Cell Cycle
20785 views
21.2: Mitosis (
Practice Test
)
Mitosis, Prophase
30609 views
Anaphase, Telophase of Mitosis
16891 views
More on Mitosis, Cytokinesis
10975 views
Significance of Mitosis
10862 views
Cancer (Uncontrolled Cell Division)
3827 views
Cancer Types
1709 views
Carcinogens
971 views
Benign or Malignant
1102 views
21.3: Meiosis (
Practice Test
)
Metaphase I, Anaphase I and Telophase I
15853 views
Meiosis-I, Prophase I
13659 views
Meiosis I (Prophase I)
8802 views
Meiosis-II
7798 views
Importance of Meiosis
2663 views
21.4: Meiotic Errors (Non-Disjunction) (
Practice Test
)
Chromosomal Mutations
5795 views
Chromosomal Mutations (Turner Syndrome)
4338 views
Apoptosis and Necrosis
2655 views
Chapter 22 Variation And Genetics (
45 videos
)
  (
Practice Test
)
22.1: Genes, Alleles And Gene Pool (
Practice Test
)
Genes, Locus, Alleles, Phenotype, Genotype
22120 views
Gene Pool
10442 views
22.2: Mendel's Laws of Inheritance (
Practice Test
)
Mendel’s Law of Segregation
28037 views
Mendel's Interpretation
5460 views
Test Cross
8062 views
Punnet Square, Test Cross
4894 views
Mendel’s Law of Independent Assortment
19410 views
22.3: Dominance Relations (
Practice Test
)
Complete Dominance
5375 views
Incomplete Dominance
8390 views
Codominance
8185 views
Co-Dominance
2165 views
22.4: MN Blood Type or Blood Group System (
Practice Test
)
MN Blood Type (Blood Group System)
7801 views
Over Dominance
7142 views
Multiple Alleles
7716 views
ABO-Blood Group System
9962 views
Rh Blood Group System
675 views
Erythroblastosis Fetalis
8852 views
22.5: Epistasis (
Practice Test
)
Epistasis
9802 views
Bombay Phenotype
9914 views
22.6: Pleiotropy (
Practice Test
)
Pleiotropy
5738 views
22.7: Continuously Varying Traits (
Practice Test
)
Qualitative Traits
5211 views
Quantitative Traits
5334 views
Wheat Grain Colour
4859 views
Human Skin Colour
3448 views
22.8: Gene Linkage (
Practice Test
)
Gene Linkage
11098 views
22.9: Crossing Over
Crossing Over
24910 views
22.10: Sex Determination (
Practice Test
)
Genetic Recombination
7696 views
Sex Determination, Chromosome in Drosophila
5522 views
Patterns of Sex Determination
3770 views
Chromosome in Man
2013 views
Comparison of Chromosomal Determination of Sex Between Drosophila and Humans
4292 views
Sex Determination in Plants
4621 views
22.11: Sex Linkage (
Practice Test
)
Sex Linkage in Drosophila
12208 views
Test Cross
8062 views
Reciprocal Cross As A Confirmatory Test
Sex-Linkage in Human
3958 views
Haemophilia
4161 views
More on Haemophilia
2149 views
Sex Linked Inheritance, Colour Blindness
8494 views
Night blindness and Color Blindness
3056 views
X- Linked Dominant Inheritance
5677 views
Y- Linked Inheritance
4588 views
Sex Limited Trait, Sex Influenced Trait
7895 views
22.12: Diabetes Mellitus And Its genetic Basis (
Practice Test
)
Diabetes Mellitus and Its Genetic Basis
2732 views
Diabetes Mellitus Type II and Its Genetic Basis
1646 views
Chapter 23 Biotechnology (
51 videos
)
  (
Practice Test
)
23.1: Cloning of A Gene (
Practice Test
)
Using Bacteria in Genetic Engineering
27401 views
Advance Recombinant DNA Technology, How to Get a Gene
5232 views
Recombinant DNA Technology Depends on Enzymes
2943 views
Molecular Scissor: Restriction Endonucleases
5696 views
Molecular Carrier: Vector
5827 views
More on Molecular Carrier (Vector)
2878 views
Molecular Carrier (Vector) Cosmid and Artificial Chromosome
DNA Ligase and Expression System
2946 views
Expression of the Recombinant DNA
2914 views
Genomic Library
8864 views
The Polymerase Chain Reaction
4706 views
Components of PCR
3158 views
Mechanism of PCR
3492 views
Applications of PCR
8141 views
Analyzing DNA
4331 views
Procedure of DNA Analysis
6986 views
Autoradiography
20898 views
Application of DNA Analysis
2475 views
DNA Sequencing
5611 views
Sanger's Method
9562 views
Gel Electrophoresis
3376 views
Visualization of Fragments
589 views
Maxam-Gilbert Method
10323 views
Automatic DNA Sequencing
10490 views
23.2: The Human Genome Project (
Practice Test
)
The Human Genome Project
5217 views
Benefits of Human Genome Project
2514 views
23.3: Biotechnology Products (
Practice Test
)
Transgenic Bacteria
3120 views
Role of Transgenic Bacteria in Human Welfare
3035 views
Transgenic Plants
8973 views
Transgenic Animals
3843 views
Agrobacterium Mediated Transformation
4603 views
Electroporation Method
6823 views
Application of Transgenic Plants
4814 views
Application of Transgenic Animals
3650 views
Animal Cloning
3382 views
23.4: Gene Therapy (
Practice Test
)
Steps of Animal Cloning
2310 views
Gene Therapy
4158 views
Gene Therapy (Ex-Vivo)
3917 views
Gene Therapy In-Vivo Method
2883 views
Cystic Fibrosis
2080 views
23.5: Tissue Culture (
Practice Test
)
Tissue Culture
9223 views
Types of Tissue Culture
5201 views
Callus Culture
21539 views
Meristem Culture
12441 views
Anther/Pollen Culture
36430 views
Embryo Culture
23875 views
Ovary Culture
10521 views
Agricultural plants With Improved Traits
1369 views
Role of Transgenic Bacteria in Human Welfare
3035 views
Application of Transgenic Plants
4814 views
Application of Transgenic Animals
3650 views
Chapter 24 Evolution (
12 videos
)
  (
Practice Test
)
24.1: Concept of Evolution VS Special Creation
Concept of Evolution VS Special Creation
7210 views
24.2: Evolution From Prokaryotes to Eukaryotes (
Practice Test
)
Evolution From Prokaryotes to Eukaryotes
10401 views
24.3: Inheritance of Acquired Characteristics (
Practice Test
)
Inheritance of Acquired Characteristics
5921 views
Neo-Darwinism - The Modern Evolutionary Synthesis
9034 views
Evidence From Comparative Anatomy
5051 views
Comparative Embryology and Molecular Biology
3493 views
24.4: Natural Selection And Artificial Selection (
Practice Test
)
Gene Pool
10442 views
Gene Frequencies and Their Role in Evolution
4193 views
Hardy-Weinberg Theorem
8809 views
More on Hardy-Weinberg Theorem
4284 views
Factors Affecting Gene Frequency
4267 views
24.5: Endangered Species (
Practice Test
)
Endangered Species
1933 views
Chapter 25 Ecosystem (
27 videos
)
  (
Practice Test
)
25.1: Introduction (
Practice Test
)
Ecology
2941 views
25.2: Ecosystem (
Practice Test
)
Components of Ecosystem
5633 views
Biosphere
10372 views
Autecology and Synecology
6364 views
25.3: Components of Ecosystem (
Practice Test
)
Biotic Components
1793 views
Abiotic Components
2977 views
Abiotic Components (Temperature and Water)
1520 views
Abiotic Components (Fire, Atmosphere and Wind)
1598 views
Processes in Ecosystem and Interaction Between Biotic Components
1045 views
Food Chain
2835 views
Food Web
4222 views
25.4: Succession (
Practice Test
)
Succession
3668 views
Two Major Form of Succession
1999 views
Secondary Succession
1248 views
Stages of Succession
3627 views
Xerosere
2174 views
More on Xerosere
903 views
Parasitism
2517 views
Differences Between a Parasite and a Predator
1474 views
Symbiosis
3557 views
Symbiosis
574 views
More on Symbiosis
1817 views
25.5: Biogeochemical Cycles (
Practice Test
)
The Nitrogen Cycle
3523 views
More on Nitrogen Cycle
1332 views
Nitrogen Depletion & Its Remedies
1072 views
Flow of Energy
3628 views
Energy Relations Between Different Trophic Levels
566 views
Chapter 26 Some Major Ecosystems (
22 videos
)
  (
Practice Test
)
26.1: Aquatic or Hydrospheric Ecosystem (
Practice Test
)
Aquatic or Hydrospheric Ecosystem and Its Productivity
1323 views
Fresh Water (Standing Water Bodies)
1944 views
Limnetic and Profundal Zone of Lakes
2720 views
Running Water Bodies
678 views
Running Water Habitat
461 views
Life in Ocean
988 views
Oceanic Zone
7532 views
26.2: Terrestrial or Lithospheric Ecosystem (
Practice Test
)
Aquatic or Hydrospheric Ecosystem and Its Productivity
1323 views
Adaptation and Division for Terrestrial Ecosystem
754 views
26.3: Some Major Ecosystems In Pakistan (
Practice Test
)
Temperate Deciduous Forests
2523 views
More on Temperate Deciduous Forests
769 views
Coniferous Alpine and Boreal Forests
3215 views
Taiga
579 views
The Grass Land Ecosystem
6047 views
More on Grass Land Ecosystem
999 views
Tropical Grassland OR Savannah
686 views
Desert Ecosystem
3468 views
Desert Ecosystem (Adaptations in Plants)
1084 views
Desert Ecosystem (Adaptations in Animals)
1357 views
Tundra Ecosystem
2558 views
Alpine Tundra
987 views
Man's Role in Ecosystems
Chapter 27 Man And His Environment (
27 videos
)
  (
Practice Test
)
27.1: Renewable And Non-Renewable Resources (
Practice Test
)
Renewable and Non-Renewable Resources
4895 views
Renewable Resources (Land and Wildlife)
1832 views
Conventional Energy Resources
1877 views
Non - Conventional Energy Sources
2347 views
Tidal Power and Wind Power
1283 views
Solar energy
1073 views
Geothermal Power
840 views
27.2: Degradation And Depletion of Resources (
Practice Test
)
Nuclear Power
1342 views
Degradation and Depletion of Resources, Modification of Environment
27.3: Man's Impact On Environment
Human Impact on Environment
27.4: Deforestation And Afforestation (
Practice Test
)
Deforestation, Soil Erosion
2459 views
27.5: Pollution (
Practice Test
)
Air Pollution
2761 views
Pollutants
3232 views
Ozone Layer Depletion
1408 views
Depletion of Ozone
6088 views
Green House Effect
5647 views
Global Warming
4039 views
Effect of Global Warming
1973 views
Carbon Dioxide and Global warming
1142 views
Acid Rain
6450 views
Mechanism of Acid Rain
1945 views
Effect of Acid Rain
3475 views
Land Pollution
3544 views
Effects of Water Pollution
2093 views
Nutrient and Thermal Water Pollution
1815 views
Eutrophication or Algal Bloom, Industrial Effluents
27.6: Health and Diseases
Insecticides, Herbicides and Fertilizers
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