Approximately ________ of the light energy arriving at the surface of a leaf is useful to chlorophyll.
A) 5%
B) 10%
C) 25%
D) 50%

Question

Quizplus · Accepted Answer

Only about 25% of the light energy arriving at the surface of a leaf is useful to chlorophyll. The remaining energy is reflected or lost as heat. The amount of light energy that is useful to chlorophyll also depends on factors such as the wavelength of the light, intensity, and duration of exposure.

Approximately ________ of the Light Energy Arriving at the Surface