Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

Which wavelengths of light are most effective for driving photosynthesis?
Options
A Red and blue
Correct Answer
B Green and yellow
C Infrared and UV
D Orange and violet
Correct Answer

Option A is the correct answer.

Detailed Explanation

Chlorophyll a and b have peak absorption in the blue-violet and red regions of the visible spectrum, making these wavelengths most effective for powering the light reactions.

Hint

These are the colors chlorophyll absorbs best, reflecting green.

Question Info