There are two types of photosynthesis one is light dependent and another one is light independent reaction . If temperature is change then there is no effect in light dependent reaction but the light independent reaction depends on temperature. Once the enzyme reach their optimum temperature their is increase in overall rate. For every rise in 10 degree celcius temprature its is aprroimately doubles and further optimum temprature starts to decrease , while enzymes are denatured, and stops.
