AP BIOLOGY

Detailed explanation-1: -The wavelength of green light is thought to be the least efficient for photosynthesis. If the plants are exposed to green wavelengths during photosynthesis, the rate of photosynthesis will be the slowest. This is due to the presence of chlorophyll, a green pigment.

Detailed explanation-2: -Green light is considered the least efficient wavelength in the visible spectrum for photosynthesis, but it is still useful in photosynthesis and regulates plant architecture. Sometimes one may hear that plants don’t use green light for photosynthesis, they reflect it.

Detailed explanation-3: -Chlorophyll reflects green light as plants are mostly green in color. Hence green light cannot be used in the photosynthetic process and is the least effective color driving photosynthesis.

Detailed explanation-4: -Because green light can penetrate further into the leaf than red or blue light, in strong white light, any additional green light absorbed by the lower chloroplasts would increase leaf photosynthesis to a greater extent than would additional red or blue light.

Detailed explanation-5: -Because red light has the highest absorption by chlorophyll, it is the most effective wavelength for photosynthesis. In photosynthesis, green light is the least effective.