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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 (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
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Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Organisms which are indicator of SO2 pollution of air
- Lenticels help in gaseouss exchange and lenticular transpiration
- Malpighian tubules remove excretory products from
- Which of the following is incorrect?
- Rh factor is present in
Topics: Plant Growth and Development (126)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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