Which pigment absorbs the red and far-red light?

Cytochrome

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Phytochrome

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Carotenoids

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Chlorophyll

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Solution

The correct option is B Phytochrome
Phytochrome is a light sensitive pigment in plants and some bacteria and fungi. It exists in two interconvertible forms- Pr and Pfr. Pfr absorbs far red light of 730 nm wavelength. When it absorbs far red light, it converts to its original form, Pr. Thus Pfr is the active form of phytochrome which inhibits flowering.

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