Question

The percentage of light energy utilised for photosynthesis by higher plants is

• A. $50$
• B. $10$
• C. $42$
• D. $1-2$

Answer 1

The correct option is D $1-2$

Photosynthesis
Plants utilise only about $1-2\%$ of the total light energy. Photosynthetic rate increases with the increase in light intensity. However, the rate gradually decreases after it reaches an optimum temperature.