KVPY Sample Paper KVPY Stream-SX Model Paper-2

  • question_answer
    For every 100 units of sunlight falling on a chloroplast of a green plant, 50 units are not used for photosynthesis. This is because

    A) the wavelength are inappropriate

    B) they are converted into heat energy

    C) they are used to evaporate water vapour

    D) they fall on non-photosynthetic structures

    Correct Answer: A

    Solution :

    [a] Photosynthesis occurs most efficiently at wavelengths of red and blue light, because the chlorophyll pigments absorb light maximally at these wavelengths. Thus, for every 100 units of sunlight falling on a chloroplast of a green plant, so units are not used for photosynthesis as the wavelength are inappropriate.


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