Photosynthesis can be limited by several factors including light intensity, temperature, and carbon dioxide levels. As light intensity increases, the rate of photosynthesis also increases until it reaches a maximum level where another factor becomes limiting. Anything in short supply that is needed for photosynthesis, such as light, heat, or carbon dioxide, can act as a limiting factor to slow the rate of photosynthesis.

5. What will the graph look like for rate of photosynthesis as light intensity increases?

6. There is a point when increasing light intensity does not increase the rate because some other factor is limiting the increase.

7. Limiting Factors Anything that is short supply slows down the rate of photosynthesis. It could be light, warmth, carbon dioxide