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

Content: Trees in those forests need to  compete each other for available resources just like in a normal population  of humans. Increase in incident light beyond a point results in the decrease of  photosynthesis due to the breakdown of chlorophyll. Carbon Dioxide Concentration
The major limiting factor for photosynthesis is Carbon Dioxide (CO2). As  the carbon dioxide concentration is very low in the atmosphere. In  percentage terms it can be put somewhere between 0.03 to 0.04 per  cent. Just like any other factor, too much of carbon dioxide is also detrimental  to the plant. If the concentration reaches 0.05 per cent it results in the  increase of the rate of photosynthesis. The C3 and C4 plants respond differently to CO2 concentrations. At low light conditions neither group responds to high CO2 conditions. At high  intensities, both C3 and C4 plants show increase in the rates of  photosynthesis.