Q. The wavelength of light absorbed by $P_{r}$ from of phytochrome is
A) 640 nm
B) 680 nm
C) 720 nm
D) 620 nm
Explanation
When $P_{r}$absorbs red light (660-665 nm) it is converted into $P_{fr}$ from and when $P_{fr}$ absorbs far red light (730-735 nm)it is converted into $P_{r}$ from.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.