It is transformed into chemical energy. It is responsible for almost all carbon compounds in living organisms. The overall process is represented in the summary equation for photosynthesis. Photosynthesis equation is the reverse of the summary equation for respiration. Factors limiting the rate of photosynthesis At low levels of illumination the rate of photosynthesis is dependent on the light levels and increases as the level of light increases.
Light is said to be an limiting factor.
At higher levels of illumination, the difference in temperature becomes important. With a rise in temperature increasing the rate of photosynthesis allowing it to reach a higher plateau. Therefore temperature has become a limiting factor. From this photosynthesis was thought to be in two stages. The first stage is assumed to involve only photochemical reactions because the rate of these reactions depend directly light and is unaffected by temperature.