Question

I. it is only chlorophyll-b that can participate directly in photosynthesis ? 2. Light reaction stops when light availability decreases ? Choose the right answer from those​

Answer 1

I don't know what you are saying

Answer 2

Second statement (2) is the correct statement.

Explanation:

• Light reaction stops when light availability decreases , this is the right option. Light reaction is the first stage of photosynthesis in which solar energy is converted into chemical energy to release energy. As the intensity of light increases , rate of reaction also increases. When the light intensity decreases , light reaction also won't take place.
• Statement 1 , however , in incorrect because , it is chlorophyll-a that participates directly in photosynthesis. Chl-a is the pigment that absorbs more red light than Chl-b . Chl-b is an accessory pigment that assists Chl-a in absorbing light energy.