Far-red light promotes flowering in_______________?

Explanation

Far-red light converts the active Pfr form of phytochrome into the Pr form, which favours flowering in short-day plants by making the plant respond as though the uninterrupted night is longer. In long-day plants, red light generally promotes the flowering response by producing more Pfr. The common mistake is choosing long-day plant because far-red light is linked with changes in day length, without considering the phytochrome response.