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The red absorbing from of phytochorme ge...

The red absorbing from of phytochorme gets converted to the far - red absorbing from after getting irradiated at

A

660 nm

B

730 nm

C

530 nm

D

660 nm to 730 nm

Text Solution

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The correct Answer is:
A
Photoperiodic stimulus is believed to be perceived by phytochrome. It is a blue-green pigment existing in two inter-convertible forms `P_(fr) or P_(730)` (absorbs far-red light) and `P_(r) or P_(660)` (absorbs red light). Absorbing red light `P_(r)` is converted to `P_(fr)` rapidly.
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