Emerson effect is related to the:
1
Increase in quantum yield of photosynthesis in presence of monochromatic light.
2
Decrease in quantum yield of photosynthesis when light of two different wavelengths are provided together.
3
Decrease in quantum yield of photosynthesis in presence of high light intensity.
4
Increase in quantum yield of photosynthesis when light of two different wavelengths are provided together.