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Photosynthesis

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  1. The wavelength of light absorbed by Pr form of phytochrome is
    1. 680 nm
    2. 720 nm
    3. 620 nm
    4. 640 nm
Correct Option: A

The Pr form absorbs light between 660 to 680 nm and absorbs at a peak of 666 nm. It is the form synthesized in dark-grown seedlings. When Pr absorbs red light, it is converted to the Pfr form.


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