[AntonioLao]

One of the end products of photosynthesis is sugar or glucose with formula C6H12O6. The 2nd is oxygen gas O2. The 3rd is plain water H2O. In some textbooks the reaction is expressed as 6CO2+6H2O+photons®C6H12O6+6O2. In others, CO2+2H2O®[CH2O]+H2O+O2. Although both are balanced, the first ignored the water output; the 2nd ignored the energy input (photon absorption). As sources of energy photons, sunlight contains a complete range of frequency. However, photosynthesis has less uses for green frequency thus making the appearance of green plants. In winter seasons, falling leaves seem to reflect orange and red photons. But the mystery is the whereabouts of blue and purple photons before, during, and after photosynthesis. On the other hand, flowering plants seem to reflect white, red, orange, yellow, blue, and purple photons but never green. If anyone ever see a green rose then the following limerick is more appropriate: Roses are green, violet are yellow, sugars are bitter, blood cells are blue, and so are you.