Question

In red far red treatment response of plant depends upon

Answer 1

Absorption of red or far-red light causes a massive change to the shape of the chromophore, altering the conformation and activity of the phytochrome protein to which it is bound. Pfr is the physiologically-active form of the protein; exposure to red light yields physiological activity in the plant.

Answer 2

Explanation:

Far-red light is light at the extreme red end of the visible spectrum, just before infra-red light. Usually regarded as the region between 710 and 850 nm wavelength, it is dimly visible to some organisms' eyes. ... Far-red light also is used for vision by certain organisms such as some species of deep-sea fishes.