Recent Questions
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In A Monohybrid Cross, Pink Coloured Flowers Are Dominant Over White Coloured Flowers.
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In A Pea Plant, Find The Contrasting Trait If
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(i) In Humans, If Gene B Gives Brown Eyes (ii) What Do You Class This Trait Of Eye Colour In Human? Explain.
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A Child Questioned His Teacher That Why Do Organisms Resemble Their Parents More As Compared To Grandparents.
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Give An Example, Of A Characteristic Being Used To Determine,
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What Is The Evolutionary Significance Of The Fossil Archaeopteryx?
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State One Of The Evolutionary Forces Leading To The Origin Of A New Species According To The Darwins Theory Of Evolution.
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An Organism Which Is A Worm, Has Very Simple Eyes,
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In A Beetle Population, The Number Of Green Beetles Is More Than Blue And Red Beetles
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How Many Pairs Of Chromosomes Are Present In Human Beings?
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Why Is The Progeny Always Tall When A Tall Pea Plant Is Crosses With A Short Pea Plant?
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What Is The Cause Of Variation In Asexually Reproducing Organisms?
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In Any Population, No Two Individuals Are Absolutely Similar. Why
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Reproduction Leads To Variation. How?
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Following Are Certain Reflex Actions Occuring In Our Body
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A Child Is Frightened By A Loud Noise And Shouts For Help. In Which Order, The Different Types Of Neurons Involved Will Act?
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Adrenaline Hormone Is Secreted In The Body During Emergency Situations. What Would Be The Effects Of Increased Concentration Of Adrenaline On Body
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The Diagram Shows A Reflex Arc In Which A Bee Sting Causes The Arm To Be Moved Quickly.
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Observe The Figure Given Below. In The Figure, Some Parts Are Labelled As P, Q, R, S And T.
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The Diagram Shows The Central Nervous System, Which Has Been Blocked In Three Different Places By A Drug Used As An Anaesthetic.
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The Given Diagrams Shows Some Of The Features Of Human Skin.
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An Endocrine Gland P Is Located Below The Stomach In The Human Body.
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(i) Suggest An Explanation For The Fact That The Chemical Produced (ii) Write Any Three Endocrine Glands And Chemical Produced By Them
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Nerves And Hormones Both Are Used To Control Processes Within The Body. Using Examples
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(i) A Nerve Input Signal Travelled Only Upto The Spinal Cord (ii) Draw A Nerve Pathway For The Above Action And Suggest
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With The Help Of A Labelled Diagram, Illustrate The Pathway Of Response When Someone Pricks In Your Hand With A Pin.
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