Question

If light intensity increases the first limiting factor is

• A. CO${}_2$
• B. Starch
• C. O${}_2$
• D. SO${}_2$

Answer 1

The correct option is A CO${}_2$

Light energy is needed for photosynthesis, so as the light intensity increases, the rate of photosynthesis chemical reactions steadily increases in a linear manner. As a result, there will be depletion of carbon dioxide in the environment occurs because all the carbon dioxide will be utilized in photosynthesis.

So, the correct answer is option A.