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Question

Which one can absorb red and far-red light?

A
Carotene
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B
Xanthophyll
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C
Chlorophyll
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D
Phytochrome
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Solution

The correct option is D Phytochrome
Phytochrome is a pigment found in plants which is involved in various plant processes like seed germination. Ppr and Pr are two types of phytochromes. These are involved in various biological processes like seed germination. Ppr is the active form whereas Pr is the inactive form. Pr absorbs red light and is converted to Ppr. This Ppr induces many processes in plants. Ppr absorbs far-red light and is converted to Pr.
Thus, the correct answer is option D.

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