Ownclasses

The wavelength of light absorbed by Pr form of phytochrome is

  • 640 nm

  • 680 nm

  • 720 nm

  • 620 nm

Answer

B.

680 nm

When Pr absorbs red light (660- 665 nm) it is converted into Pfr form and when Pfr absorbs far red light (730-735 nm) it is converted into Pr form

When Pr absorbs red light (660- 665 nm) it is converted into Pfr form and when Pfr absorbs far red light (730-735 nm) it is converted into Pr form