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    Question

    Which one of the following wave- lengths of light is

    most effective in photosynthesis?
    A Blue Correct Answer Incorrect Answer
    B Green Correct Answer Incorrect Answer
    C Orange Correct Answer Incorrect Answer
    D Yellow Correct Answer Incorrect Answer

    Solution

    Photosynthesis, process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into the simple sugar glucose. The wavelength most effective in conducting photosynthesis is 420nm. Actually, 420nrn is on the blue side of the spectrum, which makes up between 1 and 10% of the light needed for photosynthesis.

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