Maximum photosynthesis occurs in which light?

Answer 1

Blues (~425-450 nm), the reds and yellows (600-700 nm). Red and yellow light is longer wavelength, lower energy light, while the blue light is higher energy.

All plants, however, has chlorophyll a, which absorbs most strongly at ~450 nm, or a bright blue color. This wavelength is strong in natural sunlight, and somewhat present in incandescent lights, but is very weak in traditional fluorescent lights.

Special plant lights increase the amount of light of this wavelength that they produce. But a 400-500 nm wavelength bulb wouldn't be enough, since many plants take cues for germination, flowering, and growth from the presence of red light as well.

Good plant lights produce red light as well, giving plants all the wavelengths of light they need for proper growth.

Answer 2

Red light increases the rate of photosynthesis. Red light produced less CO2 over time.

Answer 3

white light