Question

Which one can absorb red and far-red light?

• A. Carotene
• B. Xanthophyll
• C. Chlorophyll
• D. Phytochrome

Answer 1

The correct option is D Phytochrome

Phytochrome is a pigment found in plants which is involved in various plant processes like seed germination. P${}_{pr}$ and P${}_r$ are two types of phytochromes. These are involved in various biological processes like seed germination. P${}_{pr}$ is the active form whereas P${}_r$ is the inactive form. P${}_r$ absorbs red light and is converted to P${}_{pr}$. This P${}_{pr}$ induces many processes in plants. P${}_{pr}$ absorbs far-red light and is converted to P${}_r$.

Thus, the correct answer is option D.