Question

Considering the wavelengths of light shown below, the pigments in the granum absorb mainly in which range?

A. green, which is why plants are green
B. the infrared
C. the entire spectrum of white light
D. blue-violet and red-orange

Answer 1

D. blue-violet and red-orange

Step-by-step explanation:

The light reactions of photosynthesis use only certain wavelengths of visible light.

Light absorbing molecules known as pigments in the membranes of a granum absorb mainly in blue-violet and red-orange wavelengths. We do not see these absorbed wavelengths. What we see when we look at a leaf are the green wavelengths that the pigments transmit and reflect.