ISC Class 12 Biology Solved Question Paper 2008

Short Answer Type

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Answer the following :

What is the cause of sickle-celled anaemia?

Gene mutation is the cause of sickle-celled anaemia. Sickle cell disease is caused by a mutation in the hemoglobin-Beta gene found on chromosome 11 at the 6th position where the amino acid Glutamine is replaced by Valine 
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    Elaborate the following :

    CT-Scan

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    Elaborate the following :

    DPD

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    Answer the following :

    Why does blood not clot in blood vessels?

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    Give four differences between Meristematic and Permanent tissues. 
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    Define the following :

    Water Potential   

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    Elaborate the following : 

    VAM 

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    Elaborate the following :

    ADH

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    Enlist four physiological effects of gibberellins.
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    Elaborate the following :

    G-6PD

    130 Views
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