Which of the following statement is incorrect about photosynthesis?        

Increase in incident light beyond a point increases the formation of chlorophyll and thus increases the magnitude of photosynthesis

Shaded plants show less photosynthetic rates than directly light exposed plants.

C3 plants respond to higher CO₂ concentration by showing increased rates of photosynthesis leading to higher productivity

Tropical plants have a higher temperature optimum than the plants adapted to temperate climates.