ISC Class 12 Biology Solved Question Paper 2008

Short Answer Type

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Define the following :

Water Potential   

Water potential is the measure of relative tendency of water to move from one region of higher water concentration to another region of lower water concentration through diffusion. It is denoted by ψ
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    Answer the following :

    Why does blood not clot in blood vessels?

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    Elaborate the following :

    G-6PD

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    Enlist four physiological effects of gibberellins.
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    Elaborate the following : 

    VAM 

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    Elaborate the following :

    ADH

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    Elaborate the following :

    CT-Scan

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    Answer the following :

    What is the cause of sickle-celled anaemia?

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    Elaborate the following :

    DPD

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    Give four differences between Meristematic and Permanent tissues. 
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