What will be the effect on phytochrome in a p | vedclass

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(D) Phytochrome exists in two interconvertible forms: $P_{660}$ (red light-absorbing form) and $P_{730}$ (far-red light-absorbing form).When a plant i

Vedclass · Accepted Answer

None of these

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(D) Phytochrome exists in two interconvertible forms: $P_{660}$ (red light-absorbing form) and $P_{730}$ (far-red light-absorbing form).When a plant is exposed to red light,$P_{660}$ is converted into the physiologically active form $P_{730}$.Continuous red light maintains the phytochrome in the $P_{730}$ form.Since both forms are interconvertible and the total amount of phytochrome remains relatively stable under these conditions,none of the options suggesting destruction or decrease in level are correct.Therefore,the correct answer is $(d)$.

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

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