At night, assuming no artificial lights, primarily ____. A) P_rabsorbs red light and is converted to P_fr B) P_rabsorbs far-red light and is converted to P_fr C) P_frabsorbs red light and is converted to P_r D) P_frabsorbs far-red light and is converted to P_r E) P_fris converted to P_r

Question

Quizplus · Accepted Answer

At night, in the absence of light, Phytochrome in its far-red absorbing form (P_fr) slowly converts back to its red-absorbing form (P_r) through a thermal relaxation process. This conversion does not require the absorption of light.

At Night, Assuming No Artificial Lights, Primarily ____