ISC Class 12 Biology Solved Question Paper 2008

Short Answer Type

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What is Prosthesis ? 

Prosthesis is implanting of an artificial substitute for a body part within the body. Internal replacement include intraocular lens fabricated to resemble the remaining eye in colour and configuration, nose implant for cosmetic reshaping in-the-ear electronic hearing aids, etc. External prosthesis is exemplified by artificial arm or leg for a person who has undergone amputation.
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    Give the disadvantages of pesticides.
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    Long Answer Type

    Describe the saltatory conduction of nerve impulses. 
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    Short Answer Type

    What is Biotic Potential ? 
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    What are the main objectives of plant breeding ?
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    Explain 

    (i) Coacervates

    (ii) Geological Time Scale.

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    Differentiate between Apes and Man with respect to the following characteristics : 

    (i) Posture    (ii) Cranium

    (iii) Brow ridges    (iv) Locomotion

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    Long Answer Type

    Give a schematic representation of the Hatch-Slack (C4) cycle. 
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    Short Answer Type

    Give an account of Darwin’s finches. 
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    Long Answer Type

    Define growth. Give an account of the growth curve in plants. 
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