Question:
Which pigment absorbs the red and farred light
Which pigment absorbs the red and farred light
Updated On: Jun 23, 2024
- Cytochrome
- Phytochrome
- Carotenoids
- Chlorophyll
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The Correct Option is B
Solution and Explanation
A light-sensitive pigment found in some bacteria, fungi, and plants is called phytochrome. There are two interchangeable variants of it: Pr and Pfr. Pfr reflects far red light with a wavelength of 730 nm. It transforms back into its native state, Pr, when it absorbs far red light. Therefore, Pfr is the phytochrome's active form, which prevents blooming.
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Concepts Used:
Photosynthesis in Higher Plants
Processes Of Photosynthesis in Higher Plants:
Photosynthesis in higher plants involves the following processes:
- Light Reaction
- Dark Reaction
Light Reaction:
- This phenomenon occurs in the presence of light.
- The pigment absorbs light and produces energy in the form of ATP.
- The process involves- absorption of light, water splitting, the release of oxygen, and formation of ATP and NADPH.
Dark Reaction:
This process occurs in the absence of light in the stroma of the chloroplasts. The following cycles are involved in the process:
- Calvin Cycle (C3 Cycle)
- C4 Cycle (Hatch and Slack Pathway)