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Phytochrome in plants is sensitive to
Options
(a) green light
(b) blue light
(c) red light
(d) red and far red light
Correct Answer:
red and far red light
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 (Pfr).Scientist consider the Pfr form to be the physiologically active form. Phytochrome is a blue-green pigment existing in two interconvertible forms. One form Pfr or P₇₃₀ absorbs far-red light and the other Pr or P₆₆₀ or P₆₈₀ a
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Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
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