Question

What will be the effect on phytochrome in a plant sybjected in a plant subjected to continuous red light?

Answer 1

Answer:

Absorption of red or far-red light causes a massive change to the shape of the chromophore, altering the conformation and activity of the phytochrome protein to which it is bound. Pfr is the physiologically-active form of the protein; exposure to red light yields physiological activity in the plant.

Answer 2

Answer:

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Explanation:

Phytochrome is a photodetector pigment in the plant. It is sensitive to the red and far-red region of the visible spectrum. ... If, we subject a plant to continuous red light, the level of phytochrome in the plant decrease below a critical value and triggers the de novo synthesis of more phytochromes in the Pr form.

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