Question

How do different pigments affect photosynthesis?

Answer 1

Photosynthesis:

1. This is a photochemical reaction.
2. This process completes in two-phase:
3. Light energy is trapped in the form of ATP and other molecules.
4. Trapped energy is used to synthesize glucose from CO₂.

Role of different pigments in photosynthesis:

1. Each photochemical reaction is related to a specific photosystem.
2. These systems are known as PS1 and PS2.
3. Both systems have different pigments.
4. These pigments absorb the light.
5. PS1 is formed by Chlorophyll A (700), Chlorophyll B, and carotenoids.
6. This system can absorb light rays of wavelength 683- 700 nm.
7. This is also called P-700.
8. PS2 is formed by Chlorophyll A (683), Chlorophyll B, and carotenoids.
9. This system can absorb light rays of 680 nm wavelength.
10. Chlorophyll A is the leading pigment of photosynthesis.
11. Others are the accessory pigments.