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The wavelength of light absorbed by Pr form of photochrome is

The wavelength of light absorbed by Pr form of phytochrome is

Options

(a) 680 nm
(b) 720 nm
(c) 620 nm
(d) 640 nm

Correct Answer:

680 nm

Explanation:

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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