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Plant Growth and Development question

2007 · Q8
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Plant Growth and Development question

2007 · Q8

NEETBiologyPlant Growth and DevelopmentMCQ+4 / −1
The wavelength of light absorbed by Pr form of phytochrome is
  1. A
    680 nm
  2. B
    720 nm
  3. C
    620 nm
  4. D
    640 nm.
View written solutionFree

Correct answer: 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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