6.12 :The factors of affecting the rate of photosynthesis

The factors of affecting the rate of photosynthesis.

1. The rate of photosynthesis which takes plant is affected by factors such as light intensity, concentration of carbon dioxide and temperature.

i. Light is essential during the light reaction of photosynthesis

ii. When the concentration of carbon dioxide  and temperature are controlled at constant levels, the rate of photosynthesis is directly  proportional to light intensity up to a certain point.

ii. As the light intensity  increases ,the rate of photosynthesis increases up to  a maximum  rate .

iv. A further increase in light intensity does not increase the rate of photosynthesis because of  limiting  factors such as the concentration of carbon dioxide and temperature.

v. when the carbon dioxide concentration of the environment is raised, the rate of photosynthesis is higher the  rate of photosynthesis of the corresponding light intensity.

vi. At very high light intensity, the rate of photosynthesis decreases because the pigment chlorophyll  is damaged by ultra-violet rays