NCERT-Class 9th-Science All chapters -Notes-Solutions

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Subject : Science (English)

Chapter 1: Matter in Our Surrounding

Matter in Our Surrounding Definition of matter; solid, liquid and gas; characteristics - shape, volume, density; change of state-melting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, sublimation. Nature of matter : Elements, compounds and mixtures. Heterogenous and homogenous mixtures, colloids and suspensions.

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1- [video_lightbox_youtube video_id="yfFjgFKwDPQ&rel=0" width="640" height="520" start="10" anchor="Full Chapter"]

Chapter 2: Is Matter around Us Pure

Is Matter around Us Pure: Elements, compounds and mixtures. Heterogenous and homogenous mixtures, colloids and suspensions

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1- [video_lightbox_youtube video_id="pxfKOBxTJDo&rel=0" width="640" height="520" start="10" anchor="Full Chapter"]

  • Notes : Online , PDF

Chapter 3: Atoms and Molecules

Atoms and Molecules: Particle nature, basic units : Atoms and molecules. Law of constant proportions. Atomic and molecular masses

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1- [video_lightbox_youtube video_id="53fYVXPfqMY&rel=0" width="640" height="520" start="10" anchor="Full Chapter"]

  • Notes : Online , PDF

Chapter 4: Structure of the Atom

Structure of the Atom: Electrons, protons and neutrons; Isotopes and isobars

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1- [video_lightbox_youtube video_id="LsW6Sle-SnA&rel=0" width="640" height="520" start="10" anchor="Full Chapter"]

  • Notes : Online , PDF

Chapter 5: The Fundamental Unit of Life

The Fundamental Unit of Life Cell - Basic Unit of life : Cell as a basic unit of life; prokaryotic and eukaryotic cells, multicellular organisms; cell membrane and cell wall, cell organelles and cell inclusions; chloroplast, mitochondria, vacuoles, endoplasmic reticulum, Golgi apparatus;nucleus, chromosomes - basic structure, number.

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1- [video_lightbox_youtube video_id="tZW1bjDHnTY&rel=0" width="640" height="520" start="10" anchor="(Introduction & Discovery of Cell"]

2- [video_lightbox_youtube video_id="ym2_AFgeKXo&rel=0" width="640" height="520" start="10" anchor="Cell theory Evolution"]

3- [video_lightbox_youtube video_id="N2vp98dy35k&rel=0" width="640" height="520" start="10" anchor=" Unicellular organism"]

4- [video_lightbox_youtube video_id="37ZqbgJ68vs&rel=0" width="640" height="520" start="10" anchor="Multicellular organism"]

5- [video_lightbox_youtube video_id="hME6z4G_39s&rel=0" width="640" height="520" start="10" anchor="Structure of cell- Plasma membrane"]

6- [video_lightbox_youtube video_id="IFkeIYjY_pY&rel=0" width="640" height="520" start="10" anchor="Structure of cell- Cell wall"]

7- [video_lightbox_youtube video_id="Fj79A-84Zyo&rel=0" width="640" height="520" start="10" anchor="Structure of cell- Nucleus"]

8- [video_lightbox_youtube video_id="E-pW1p3FLXI&rel=0" width="640" height="520" start="10" anchor="Structure of cell-Cytoplasm & organelles"]

9- [video_lightbox_youtube video_id="lBj0Y1Uh0M8&rel=0" width="640" height="520" start="10" anchor="Cell Organelles - Endoplasmic Reticulum"]

10- [video_lightbox_youtube video_id="-9eMChvTlOU&rel=0" width="640" height="520" start="10" anchor="Golgi apparatus, Lysosomes"]

11- [video_lightbox_youtube video_id="Wo-AhhUx3CQ&rel=0" width="640" height="520" start="10" anchor="Cell Organelles - Mitochondria & plastids"]

12- [video_lightbox_youtube video_id="O5mbDJ7S3gY&rel=0" width="640" height="520" start="10" anchor="Vacuoles, Plant vs. Animal cell"]

  • Notes : Online , PDF

Chapter 6: Tissues

Tissues: Structure and functions of animal and plant tissues (only four types of tissues in animals; Meristematic and Permanent tissues in plants)

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1- [video_lightbox_youtube video_id="IIvfq363874&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="uqbrmV62NSA&rel=0" width="640" height="520" start="10" anchor="Plant vs. Animal tissues"]

3- [video_lightbox_youtube video_id="IIQD12mf-dk&rel=0" width="640" height="520" start="10" anchor="Meristematic Tissues"]

4- [video_lightbox_youtube video_id="VExaBUuNrFs&rel=0" width="640" height="520" start="10" anchor=" Types of Meristematic tissues"]

5- [video_lightbox_youtube video_id="dfAQ4vj5sbE&rel=0" width="640" height="520" start="10" anchor="Simple Permanent tissue-Parenchyma,Collenchyma,Sclerenchyma"]

6- [video_lightbox_youtube video_id="QS1VKEPcjFY&rel=0" width="640" height="520" start="10" anchor="Complex Permanent tissues-Xylem & Phloem"]

7- [video_lightbox_youtube video_id="15AiALClyA4&rel=0" width="640" height="520" start="10" anchor=" Animal Tissues-Introduction"]

8- [video_lightbox_youtube video_id="VI39Hl7N-lI&rel=0" width="640" height="520" start="10" anchor="Epithelial tissues-Structure & Function"]

9- [video_lightbox_youtube video_id="7COBSz7DxTw&rel=0" width="640" height="520" start="10" anchor="Epithelial tissues types"]

10- [video_lightbox_youtube video_id="CiiE5cCyHeU&rel=0" width="640" height="520" start="10" anchor="Epithelial tissues types"]

11- [video_lightbox_youtube video_id="09Fsj8BpH8Y&rel=0" width="640" height="520" start="10" anchor="Connective tissue: Structure & Function"]

12- [video_lightbox_youtube video_id="2R9A5fxDniE&rel=0" width="640" height="520" start="10" anchor="Blood"]

13- [video_lightbox_youtube video_id="G7TvREoR5Hs&rel=0" width="640" height="520" start="10" anchor="Bone & Cartilage"]

14- [video_lightbox_youtube video_id="9-G0e7QS92o&rel=0" width="640" height="520" start="10" anchor="Dense connective tissue"]

15- [video_lightbox_youtube video_id="Prk-T2nDtCw&rel=0" width="640" height="520" start="10" anchor="Muscular Tissue: Skeletal, Smooth, Cardiac muscle tissue"]

16- [video_lightbox_youtube video_id="2iLtGXRQD2Q&rel=0" width="640" height="520" start="10" anchor="Nervous tissue: Neuron"]

  • Notes : Online , PDF

Chapter 7: Diversity in Living Organisms

Diversity in Living Organisms: Diversity of plants and animals - basic issues in scientific naming, basis of classification. Hierarchy of categories / groups, Major groups of plants (salient features) (Bacteria, Thallophyta, Bryophyta, Pteridophyta, Gymnosperms and Angiosperms). Major groups of animals (salient features) (Non-chordates upto phyla and chordates upto classes).

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1- [video_lightbox_youtube video_id="CSq294Zo54Y&rel=0" width="640" height="520" start="10" anchor=" Introduction"]

2- [video_lightbox_youtube video_id="sw2vJfWkUt4&rel=0" width="640" height="520" start="10" anchor="Need for Classification"]

3- [video_lightbox_youtube video_id="6NRgkmk-zzk&rel=0" width="640" height="520" start="10" anchor="Basis of classification, aristotle"]

4- [video_lightbox_youtube video_id="z2QYgVb8nhE&rel=0" width="640" height="520" start="10" anchor="Evolution"]

5- [video_lightbox_youtube video_id="h1fEnMGNeXc&rel=0" width="640" height="520" start="10" anchor="Evolution"]

6- [video_lightbox_youtube video_id="cCdgEbKzMGQ&rel=0" width="640" height="520" start="10" anchor="Whittaker's 5-kingdom classification"]

7- [video_lightbox_youtube video_id="fiLeLugXXUM&rel=0" width="640" height="520" start="10" anchor="Monera"]

8- [video_lightbox_youtube video_id="VM5TYHFSALs&rel=0" width="640" height="520" start="10" anchor="Protista"]

9- [video_lightbox_youtube video_id="px731_VqdrM&rel=0" width="640" height="520" start="10" anchor="Fungi"]

10- [video_lightbox_youtube video_id="WWSeV0GADgs&rel=0" width="640" height="520" start="10" anchor="Fungi:Symbiosis"]

11- [video_lightbox_youtube video_id="d841XdZz-wU&rel=0" width="640" height="520" start="10" anchor=" Plantae:Characteristics"]

12- [video_lightbox_youtube video_id="lKMjPrdDqbw&rel=0" width="640" height="520" start="10" anchor="Plantae; Thallophyta,Bryophyta"]

13- [video_lightbox_youtube video_id="zyg6jtKr35E&rel=0" width="640" height="520" start="10" anchor="(Plantae: Pteridophytes, Phanerogams"]

14- [video_lightbox_youtube video_id="bLhw6IxIOZg&rel=0" width="640" height="520" start="10" anchor="Plantae: Gymnosperms & Angiosperms"]

15- [video_lightbox_youtube video_id="MXhGeRvwjYE&rel=0" width="640" height="520" start="10" anchor="Plantae: Dicots & Monocots"]

16- [video_lightbox_youtube video_id="kZgx3BkyQ4c&rel=0" width="640" height="520" start="10" anchor="Animalia: Characteristics"]

17- [video_lightbox_youtube video_id="pZkBxpqb67Q&rel=0" width="640" height="520" start="10" anchor="Porifera & coelentrata"]

18- [video_lightbox_youtube video_id="7ltjeIhRiZc&rel=0" width="640" height="520" start="10" anchor="Platyhelminthes"]

19- [video_lightbox_youtube video_id="UTenUD0zbBc&rel=0" width="640" height="520" start="10" anchor=" Nematoda & Annelida"]

20- [video_lightbox_youtube video_id="6A0Jsg9_Bks&rel=0" width="640" height="520" start="10" anchor="Arthropoda & Mollusca"]

21- [video_lightbox_youtube video_id="lIF0PCVWaKc&rel=0" width="640" height="520" start="10" anchor="Echinodermata & Protochordata"]

22- [video_lightbox_youtube video_id="iFYiY7SQpYM&rel=0" width="640" height="520" start="10" anchor="Vertebrata: Characteristics"]

23- [video_lightbox_youtube video_id="u6w9tzNSCks&rel=0" width="640" height="520" start="10" anchor="Pisces & Amphibia"]

24- [video_lightbox_youtube video_id="-G22koD3tYc&rel=0" width="640" height="520" start="10" anchor="Reptilia, Aves & Mammals"]

25- [video_lightbox_youtube video_id="0vLmHiKVugE&rel=0" width="640" height="520" start="10" anchor="Nomenclature"]

  • Notes : Online , PDF

Chapter 8: Motion

Motion: Distance and displacement, velocity; uniform and non-uniform motion along a straight line; acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion, derivation of equations of motion by graphical method; elementary idea of uniform circular motion.

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1- [video_lightbox_youtube video_id="F-WGuMkT79g&rel=0" width="640" height="520" start="10" anchor="Introduction Rectilinear & circular motionIntroduction Rectilinear & circular motion"]

2- [video_lightbox_youtube video_id="eUXv-z8JcEs&rel=0" width="640" height="520" start="10" anchor="Path, Length & Displacement"]

3- [video_lightbox_youtube video_id="oDl49Hl2LB4&rel=0" width="640" height="520" start="10" anchor="Scalar & vector quantity"]

4- [video_lightbox_youtube video_id="5H4M7PXtaek&rel=0" width="640" height="520" start="10" anchor="Speed & Velocity"]

5- [video_lightbox_youtube video_id="LezCQhYkC0c&rel=0" width="640" height="520" start="10" anchor="Uniform & non-uniform motion"]

6- [video_lightbox_youtube video_id="BFmx43TtRa8&rel=0" width="640" height="520" start="10" anchor="Average & instantaneous speed & velocity"]

7- [video_lightbox_youtube video_id="R3zXlmQgTx8&rel=0" width="640" height="520" start="10" anchor="Numerical"]

8- [video_lightbox_youtube video_id="9O1Ipx7wkqo&rel=0" width="640" height="520" start="10" anchor="Numerical"]

9- [video_lightbox_youtube video_id="wQFkzSq55JU&rel=0" width="640" height="520" start="10" anchor="Acceleration"]

10- [video_lightbox_youtube video_id="OlW0jtYErHM&rel=0" width="640" height="520" start="10" anchor="Graphical representation of motion"]

11- [video_lightbox_youtube video_id="JujtoU_mrKs&rel=0" width="640" height="520" start="10" anchor="Numerical"]

12- [video_lightbox_youtube video_id="5Q3UBGr0UwQ&rel=0" width="640" height="520" start="10" anchor=" Equation of motion"]

13- [video_lightbox_youtube video_id="qO4pHr8hWVQ&rel=0" width="640" height="520" start="10" anchor="Numerical Equation of motion"]

14- [video_lightbox_youtube video_id="kbDgz-7dY9M&rel=0" width="640" height="520" start="10" anchor="Uniform circular motion"]

  • Notes : Online , PDF

Chapter 9:  Forces and Laws of Motion

 Forces and Laws of Motion Force : Force and Motion, Newton's Laws of Motion, Inertia of a body, Inertia and mass, Momentum, Force and Acceleration. Elementary idea of conservation of Momentum, Action and Reaction forces.

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1- [video_lightbox_youtube video_id="cwLMejalz-E&rel=0" width="640" height="520" start="10" anchor="Introduction Balanced & unbalanced force"]

2- [video_lightbox_youtube video_id="6nE0OcuBxbk&rel=0" width="640" height="520" start="10" anchor="Aristotle & Galileo's law"]

3- [video_lightbox_youtube video_id="7UFSqc-kzwM&rel=0" width="640" height="520" start="10" anchor="Newton's 1st first law, Inertia"]

4- [video_lightbox_youtube video_id="FCUN6HEmnz8&rel=0" width="640" height="520" start="10" anchor="Newton's 2nd second law, Momentum"]

5- [video_lightbox_youtube video_id="5fcVDF4DNXE&rel=0" width="640" height="520" start="10" anchor="Newton's 3rd third law"]

6- [video_lightbox_youtube video_id="zaAET9vd9cM&rel=0" width="640" height="520" start="10" anchor="Conservation of momentum"]

7- [video_lightbox_youtube video_id="TX7P9PHhBN4&rel=0" width="640" height="520" start="10" anchor="Numerical"]

8- [video_lightbox_youtube video_id="BfWHOKEVQvU&rel=0" width="640" height="520" start="10" anchor="Numerical"]

9- [video_lightbox_youtube video_id="mwuNOgWKw9Y&rel=0" width="640" height="520" start="10" anchor="Numerical"]

10- [video_lightbox_youtube video_id="msmtsylsEdU&rel=0" width="640" height="520" start="10" anchor="Numerical"]

  • Notes : Online , PDF

Chapter 10: Gravitation

Gravitation: Gravitation; Universal Law of Gravitation, Force of Gravitation of the earth (gravity), Acceleration due to Gravity; Mass and Weight; Free fall.

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1- [video_lightbox_youtube video_id="sYaeBZIGc4I&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="iFTPcXzC-z8&rel=0" width="640" height="520" start="10" anchor="Universal law of gravitation"]

3- [video_lightbox_youtube video_id="mKgqvOkdX9g&rel=0" width="640" height="520" start="10" anchor="Universal law of gravitation mathematical formula"]

4- [video_lightbox_youtube video_id="OiNqgT_82a4&rel=0" width="640" height="520" start="10" anchor="Acceleration due to gravity"]

5- [video_lightbox_youtube video_id="rUeabHa-jM0&rel=0" width="640" height="520" start="10" anchor="Mass & Weight"]

6- [video_lightbox_youtube video_id="brIvW-mlp0g&rel=0" width="640" height="520" start="10" anchor="Numerical"]

7- [video_lightbox_youtube video_id="vjS7i9NTGX0&rel=0" width="640" height="520" start="10" anchor="Numerical"]

8- [video_lightbox_youtube video_id="nr4kC5dsyYw&rel=0" width="640" height="520" start="10" anchor="Thurst & Pressure"]

9- [video_lightbox_youtube video_id="XZZWDz6K76c&rel=0" width="640" height="520" start="10" anchor="Thurst & Pressure Examples . Application"]

10- [video_lightbox_youtube video_id="KGa9Ovz6Jrk&rel=0" width="640" height="520" start="10" anchor="Pressure in Fluids : Buoyancy"]

  • Notes : Online , PDF

Chapter 11: Work and Energy

Work and Energy: Work done by a Force, Energy, power; Kinetic and Potential energy; Law of conservation of energy

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1- [video_lightbox_youtube video_id="IrjoZ8ciHDE&rel=0" width="640" height="520" start="10" anchor="Introduction to Work & Numericals"]

2- [video_lightbox_youtube video_id="pSZV77U12RQ&rel=0" width="640" height="520" start="10" anchor="Kinetic Energy"]

3- [video_lightbox_youtube video_id="N6TKBpQUzrM&rel=0" width="640" height="520" start="10" anchor="Potential Energy"]

4- [video_lightbox_youtube video_id="uEzCP-FMn8o&rel=0" width="640" height="520" start="10" anchor="Conservation of Energy"]

  • Notes : Online , PDF

Chapter 12: Sound

Sound: Nature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo and SONAR. Structure of the Human Ear (Auditory aspect only).

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1- [video_lightbox_youtube video_id="mM5hbBoLz_o&rel=0" width="640" height="520" start="10" anchor="Production & Propagation of sound"]

2- [video_lightbox_youtube video_id="8NFKsFA5qcg&rel=0" width="640" height="520" start="10" anchor="Longitudinal nature of sound"]

3- [video_lightbox_youtube video_id="QfPKCXmaMso&rel=0" width="640" height="520" start="10" anchor=" Characteristics of Sound: Wavelength, frequency, time period"]

4- [video_lightbox_youtube video_id="wWTT3NhjZpg&rel=0" width="640" height="520" start="10" anchor="Characteristics of Sound: Pitch, amplitude, Quality"]

5- [video_lightbox_youtube video_id="1z7Zc_e9O-k&rel=0" width="640" height="520" start="10" anchor="Characteristics of Sound: Speed"]

6- [video_lightbox_youtube video_id="5Pb0BJUVmsw&rel=0" width="640" height="520" start="10" anchor="Characteristics of Sound: Numerical"]

7- [video_lightbox_youtube video_id="hOCpN0H8tk4&rel=0" width="640" height="520" start="10" anchor="Reflection of Sound: Echo"]

8- [video_lightbox_youtube video_id="n3m5AbtOpOY&rel=0" width="640" height="520" start="10" anchor="Reflection of Sound: Reverberation"]

9- [video_lightbox_youtube video_id="gBEVngqd_AA&rel=0" width="640" height="520" start="10" anchor="Range of Hearing"]

10- [video_lightbox_youtube video_id="5FcKulqx9N4&rel=0" width="640" height="520" start="10" anchor="Ultrasound"]

11- [video_lightbox_youtube video_id="4OQ1CxxSlKs&rel=0" width="640" height="520" start="10" anchor="Human ear"]

12- [video_lightbox_youtube video_id="7YXoAAyliwU&rel=0" width="640" height="520" start="10" anchor="Numerical"]

  • Notes : Online , PDF

Chapter 13: Why Do We Fall ill

Why Do We Fall ill: Health and its failure. Infectious and Non-infectious diseases, their causes and manifestation. Diseases caused by microbes (Virus, Bacteria and Protozoans) and their prevention; Principles of treatment and prevention. Pulse Polio programmes.

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1- [video_lightbox_youtube video_id="jfljIaBoLcs&rel=0" width="640" height="520" start="10" anchor="Significance of Health"]

2- [video_lightbox_youtube video_id="wyVok_W9svE&rel=0" width="640" height="520" start="10" anchor="Factors affecting Health"]

3- [video_lightbox_youtube video_id="0BRWmzHSERY&rel=0" width="640" height="520" start="10" anchor="Disease-Signs & Symptoms; Acute vs. Chronic"]

4- [video_lightbox_youtube video_id="Gpi0VnszBO0&rel=0" width="640" height="520" start="10" anchor="Cause of Disease"]

5- [video_lightbox_youtube video_id="TZwnufaBSWo&rel=0" width="640" height="520" start="10" anchor="Infectious & Non-infectious disease; agents"]

6- [video_lightbox_youtube video_id="Xlwremytalk&rel=0" width="640" height="520" start="10" anchor=" knowing infectious agents help disease treatment"]

7- [video_lightbox_youtube video_id="INJmUItcZg0&rel=0" width="640" height="520" start="10" anchor="Means of spread of Infectious disease"]

8- [video_lightbox_youtube video_id="0ozm_VzTVgs&rel=0" width="640" height="520" start="10" anchor="How infectious agents target our body"]

9- [video_lightbox_youtube video_id="nYybPsM8kUc&rel=0" width="640" height="520" start="10" anchor="Principle of Prevention & treatment"]

10- [video_lightbox_youtube video_id="e9eKsbsFvQQ&rel=0" width="640" height="520" start="10" anchor="Vaccination"]

11- [video_lightbox_youtube video_id="war1x4umxy0&rel=0" width="640" height="520" start="10" anchor="Questions"]

  • Notes : Online , PDF

Chapter 14: Natural Resources

Natural Resources Definition of matter; solid, liquid and gas; characteristics - shape, volume, density; change of state-melting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, sublimation.

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1- [video_lightbox_youtube video_id="Fwb7VH4H2rY&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="EUddbJmre2I&rel=0" width="640" height="520" start="10" anchor="Air Importance"]

3- [video_lightbox_youtube video_id="mkN3pxBXNYk&rel=0" width="640" height="520" start="10" anchor=" Role of Atmosphere"]

4- [video_lightbox_youtube video_id="Ul-bP7qFI5s&rel=0" width="640" height="520" start="10" anchor="Movement of Air : Land and sea Breeze"]

5- [video_lightbox_youtube video_id="IN96oLMW10g&rel=0" width="640" height="520" start="10" anchor="Air Pollution: Harmful effects"]

6- [video_lightbox_youtube video_id="YUX_BGYGTAg&rel=0" width="640" height="520" start="10" anchor="Air Pollution: Causes"]

7- [video_lightbox_youtube video_id="bIj6yBC5F_4&rel=0" width="640" height="520" start="10" anchor="Air Pollution: Control"]

8- [video_lightbox_youtube video_id="0RQq7gxgpWA&rel=0" width="640" height="520" start="10" anchor="Rain: Cause and Importance"]

9- [video_lightbox_youtube video_id="zTaAtGAF3pU&rel=0" width="640" height="520" start="10" anchor="Acid Rain"]

10- [video_lightbox_youtube video_id="rMgIdeoJeMM&rel=0" width="640" height="520" start="10" anchor="Water and Water Pollution"]

11- [video_lightbox_youtube video_id="ErRtLilYF-w&rel=0" width="640" height="520" start="10" anchor="Water Pollution : Cause"]

12- [video_lightbox_youtube video_id="2Jfq6_Px55A&rel=0" width="640" height="520" start="10" anchor="Water Pollution : Control"]

13- [video_lightbox_youtube video_id="BBQkS0x0XLc&rel=0" width="640" height="520" start="10" anchor="Soil and formation"]

14- [video_lightbox_youtube video_id="dAPprD9yznQ&rel=0" width="640" height="520" start="10" anchor="Soil Quality and plant needs"]

15- [video_lightbox_youtube video_id="glFNboYXL7U&rel=0" width="640" height="520" start="10" anchor="Agrochemicals"]

16- [video_lightbox_youtube video_id="IydBKqw34v0&rel=0" width="640" height="520" start="10" anchor="Water Cycle"]

17- [video_lightbox_youtube video_id="lqleiJOLnsw&rel=0" width="640" height="520" start="10" anchor=" Nitrogen Cycle"]

18- [video_lightbox_youtube video_id="gINeGRXYt3I&rel=0" width="640" height="520" start="10" anchor="Nitrogen Fixation : Atmospheric, Industrial"]

19- [video_lightbox_youtube video_id="Rmk9nxedOxY&rel=0" width="640" height="520" start="10" anchor="Nitrification and de-nitrification and Biological"]

20- [video_lightbox_youtube video_id="9qB-Hf42rZM&rel=0" width="640" height="520" start="10" anchor="Ammonification"]

21- [video_lightbox_youtube video_id="NSUhuhW3vIQ&rel=0" width="640" height="520" start="10" anchor="Carbon Cycle"]

22- [video_lightbox_youtube video_id="Qd8093gDjew&rel=0" width="640" height="520" start="10" anchor="Green House Effect"]

23- [video_lightbox_youtube video_id="MH9cVoxKstQ&rel=0" width="640" height="520" start="10" anchor="Why called Green House Effect"]

24- [video_lightbox_youtube video_id="HYP-1607f6A&rel=0" width="640" height="520" start="10" anchor="Global Warming"]

25- [video_lightbox_youtube video_id="dJXKrz6LTdE&rel=0" width="640" height="520" start="10" anchor="Oxygen Cycle"]

26- [video_lightbox_youtube video_id="l5egbSfOhe8&rel=0" width="640" height="520" start="10" anchor=" Ozone Layer"]

  • Notes : Online , PDF

Chapter 15: Improvement in Food Resources

Improvement in Food Resources Plant and animal breeding and selection for quality improvement and management; Use of fertilizers and manures; Protection from pests and diseases; Organic farming.

1) Book  :

2) Solutions  :

3) Notes : 

4) Tests :

5) Video by Topic :

Click to View Chapter-15 Topic wise Videos

- Click on Topic link to open video

1- [video_lightbox_youtube video_id="9LMiwdIXkZQ&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="eXuuXeOseqU&rel=0" width="640" height="520" start="10" anchor="Crops yields improvement techniques"]

3- [video_lightbox_youtube video_id="58qXWaiRNa0&rel=0" width="640" height="520" start="10" anchor="Crops variety improvement, why?"]

4- [video_lightbox_youtube video_id="sC5efFn9vmA&rel=0" width="640" height="520" start="10" anchor="Crops variety improvement, how?"]

5- [video_lightbox_youtube video_id="hLP6waLWoUY&rel=0" width="640" height="520" start="10" anchor="Crop production, nutrient management"]

6- [video_lightbox_youtube video_id="PNIUXGaS9BY&rel=0" width="640" height="520" start="10" anchor="Manure"]

7- [video_lightbox_youtube video_id="lUiPZ4imqT4&rel=0" width="640" height="520" start="10" anchor=" Fertilizers, organic farming"]

8- [video_lightbox_youtube video_id="re_zLXE0_iA&rel=0" width="640" height="520" start="10" anchor=" Irrigation"]

9- [video_lightbox_youtube video_id="pQPdjSQEnxg&rel=0" width="640" height="520" start="10" anchor="Rain water harvesting"]

10- [video_lightbox_youtube video_id="bzOSdgXR0pY&rel=0" width="640" height="520" start="10" anchor="Cropping pattern"]

11- [video_lightbox_youtube video_id="PL7I5OInOEQ&rel=0" width="640" height="520" start="10" anchor="Animal Husbandry"]

12- [video_lightbox_youtube video_id="R6QMbcD-kiU&rel=0" width="640" height="520" start="10" anchor="Cattle husbandry"]

13- [video_lightbox_youtube video_id="EgNHJUxW_k8&rel=0" width="640" height="520" start="10" anchor="Poultry farming"]

14- [video_lightbox_youtube video_id="FOFgoqUbJwI&rel=0" width="640" height="520" start="10" anchor="Fish production"]

15- [video_lightbox_youtube video_id="V_8eALPZNq4&rel=0" width="640" height="520" start="10" anchor="Bee keeping"]

16- [video_lightbox_youtube video_id="cpXwvoh9DU4&rel=0" width="640" height="520" start="10" anchor="Conclusion"]

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