Which of the following statements are CORRECT about phytochromes? A. Phytochrome pigment exists in two forms. B. Two forms of phytochrome are interconvertible. C. Pfr form of phytochrome inhibits flowering in SDP during day time. D. Pfr form of phytochrome inhibits flowering in LDP during day time E. During day time Pr is accumulated in plants.

Step-by-step solution

Phytochrome is a photoreceptor pigment that exists in two interconvertible forms: Pr (red light absorbing) and Pfr (far-red light absorbing). Pr absorbs red light and converts into Pfr , while Pfr absorbs far-red light and converts back into Pr . During the day time, sunlight contains more red light, leading to the accumulation of the Pfr form, not Pr . The Pfr form is the physiologically active form. It promotes flowering in Long Day Plants (LDP) and inhibits flowering in Short Day Plants (SDP). Thus, statements A