The products for photosynthesis are the reactants for cellular respiration. Photosynthesis takes in carbon dioxide from the environment and gives out oxygen; cellular respiration takes in oxygen and gives out carbon dioxide. The equation for photosynthesis is 6CO2+6H2O-->C6H12O6+6O2 and the equation for cellular respiration is just that backwards with energy as part of the product. Hope this helps! :)
