1.)The Petri dish that is exposed to purely white light is demonstrating the light reaction within photosynthesis. However the Petri dish that was placed in the drawer without an ounce of light, illustrates the dark reaction or in other words the Calvin cycle. Further more the light reaction in photosynthesis requires solar energy in order to absorb co2 and h2o and produce oxygen, therefore the spinach exposed to white light was able to under go photosynthesis and float to the top. In contrast the dark reaction depends upon the ATP made during the light reaction to form glucose. 2.)Green light would be the least effective wavelength for promoting photosynthesis, due to the fact that most plants reflect green wavelengths and absorb red, blue, and orange. Therefore the green light is unable to assist in the photosynthesis process, because the majority of the solar energy in the green light is being reflected rather than absorbed by the plant. This results in the reduction of the plant's absorption of solar energy and Co2, which subsequently leads to the decreased release of oxygen, that overall impairs the light reaction within the photosynthesis process. …show more content…
For instance, in the color war lab the spinach under red light produced 67% more oxygen than under green rays of light, thus showing that the rate in which co2 and H2o are absorbed and converted into O2 is significantly affected by the light being exposed. Furthermore, if the photosynthesis process was exposed to absolutely no light, the spinaches ability to produce oxygen would become vastly impaired. In support, the average oxygen production in spinach exposed to no light was 6%, while the spinaches exposed to white light showed on average 97.25% oxygen production. Therefore the amount and specified color of the solar energy, affects the oxygen production within