The physiologically active form of phytochrom | vedclass

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Question

(B) Phytochrome exists in two interconvertible forms: $P_r$ (phytochrome red) and $P_{fr}$ (phytochrome far-red).$P_r$ absorbs red light at $660 \ nm$

Vedclass · Accepted Answer

$P_{730}$

Vedclass · Answer

(B) Phytochrome exists in two interconvertible forms: $P_r$ (phytochrome red) and $P_{fr}$ (phytochrome far-red).$P_r$ absorbs red light at $660 \ nm$ and is converted into $P_{fr}$.$P_{fr}$ absorbs far-red light at $730 \ nm$ and is the physiologically active form that triggers various plant responses such as flowering,seed germination,and leaf expansion.Therefore,the active form is $P_{730}$ (also known as $P_{fr}$).

The physiologically active form of phytochrome is:

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