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    Question

    Which of the following spectrum range is called

    photosynthetically active radiation?
    A 400-700 nm Correct Answer Incorrect Answer
    B 700-1000 nm Correct Answer Incorrect Answer
    C 1000-1300 nm Correct Answer Incorrect Answer
    D 1300-1700 nm Correct Answer Incorrect Answer

    Solution

    Photosynthetically active radiation (PAR) is light of wavelengths 400-700 nm and is the portion of the light spectrum utilised by plants for photosynthesis.

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