Title: [Explained] Factors Affecting Photosynthesis
Headings: [Explained] Factors Affecting Photosynthesis
[Explained] Factors Affecting Photosynthesis
Light
Carbon Dioxide Concentration
Temperature
Water

Content: It states that: If a chemical process is affected by more than one  factor, then its rate will be determined by the factor which is nearest to  its minimal value; it is the factor which directly affects the process if  its quantity is changed. For example, if the temperature is not optimal for the plant to undergo  photosynthesis, no matter how much light, water or CO2 is available,  the plant will not be able to carry out the process of photosynthesis. Now let us look at how the external factors affect the rate of  photosynthesis. Graph Of How Light Affects The Rate Of Photosynthesis
Light
When we discuss light as a factor that affects photosynthesis we try to  differentiate it into three parts namely light intensity, light quality and  the duration of exposure to light. There is a linear relationship between  incident light and CO2 fixation rates at low intensities. At higher  intensities the rate does not keep increasing exponentially because the  other factors such as water, CO2 concentration and temperature limit the  rate gradually. It is interesting to know that light saturation occurs at 10 per cent of  the full sunlight. What this means as a factor for photosynthesis is that  light is rarely a limiting factor only exceptions being the plants that  stand in shade or plants in thick forests.