Question

In the following reaction, what is expressed by R and FR?
$P_R\rightleftharpoons P_{FR}$

• A. A — Light B-Bark
• B. A—Dark B-Light
• C. A—Far-red light B-Red light
• D. A—Red light B-Far-red light

Answer 1

The correct option is D A—Red light B-Far-red light

This represents phytochrome Red and Phytochrome far red light. – plays a major role in the physiology of plants. This converts chromoprotein to the active form (PR) and PFR back to inactive form