Chemicals of Life
- The Leaf Structure
- The Process
- Photosynthesis Rate
- Photosynthesis Test
Thinkquest Team 22016
It can be affected by many things, including:
1)Sunlight - its Intensity
The rate of photosynthesis will always corrospond to that factor which is in least supply. Its rate will only increae when its supply is increated.
Generally the more light there is, the more photosynthesis occurs. This is true up to a point, where the plant has reached maximum photosynthesis levels, and so any increase in light intensity will not affect the plant further.
Generally higher temperatures are better than cold temperatures for photosynthesis. However if it is humid, and the air is saturated with water vapour, photosynthesis is limited. This is because the water vapour being expelled cannot leave and go into the air, as there isn't a concernation difference for it to diffuse across. So the water vapour sits in the leaf, stopping photosynthesis.
Plants need water for photosynthesis. If they lack it, they wilt. When they have a deficiency of water, their stomata close, so CO2 cannot diffuse into the leaves. So CO2 is also the limiting factor, although it is as a result of lack of water.