Which pigment is responsible for flowering in plant?

Options

(a) phytochrome
(b) cytochrome
(c) anthocyanin
(d) xanthophyll

Correct Answer:

phytochrome

Explanation:

Phytochrome is a pigment involved in the perception of photoperiodic stimuli controlling flowering, lettuce seed germination and other morphogenetic phenomenon. The phytochrome exists in two forms : the phytochrome red absorbing form (Pᵣ) and the phytochrome far-red absorbing form (P_fr). Scientist consider the P_fr form to be the physiologically active form. Phytochrome is a blue-green pigment existing in two interconvertible forms. One form P_fr or P₇₃₀ absorbs far-red light