ISC Class 12 Biology Solved Question Paper 2008

Short Answer Type

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Answer the following : 

What is Apical Dominance ?

Apical Dominance is the phenomenon whereby the main central stem of the plant is dominant over other side stems and on a branch, the main stem of the branch is further dominant over its own side branchlets. Thus, while the main apical shoot meristem is active it retards the activity of more recently initiated lateral bud meristems, a phenomenon called Apical dominance.
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    State the contribution of each of the following scientists :

    Hansen 

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    Give the exact location and function of the following :

    Parotid gland

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    Answer the following :

    Which protein binds Ca2+ that is released from the sarcoplasmic reticulum?

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    Give the exact location and function of the following :

    Passage cells

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    Give the exact location and function of the following :

    Epiglottis

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    Answer the following :

    Mention the site of formation of glyoxylate from glycolate in photorespiration.

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    State the contribution of each of the following scientists :

    T.R. Malthus.

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    Give the exact location and function of the following :

    Embryo sac.

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    Give the exact location and function of the following :

    Grana

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