RAJASTHAN PMT Rajasthan - PMT Solved Paper-2010

  • question_answer
    The wavelength of light absorbed by \[{{P}_{r}}\] form of phytochrome is

    A)  640 nm                               

    B)  680 nm

    C)  720 nm               

    D)         620 nm

    Correct Answer: A

    Solution :

    When \[{{P}_{r}}\] absorbs red light (660-665 nm), it is converted into \[{{P}_{fr}}\]. form and when \[{{P}_{fr}}\] absorbs far red light (730-735nm), it is converted into \[{{P}_{r}}\]. form.


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