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biology 0610printed 71 · PDF 71
328 pagesrevision 46933
printed 71 · PDF 71
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A Limiting factor is a factor that is short in supply and stops an activity happening at a
faster rate.
On a very hot and sunny day stomata closes to prevent too much water being lost.
This means that on a really hot or bright day photosynthesis may slow down.
Photosynthesis is also affected by windy conditions and humidity.
With wind involved, photosynthesis increases because the water vapor is carried
away by the wind outside the stomata and the gradient for diffusion is greater
With humidity involved, it is the opposite photosynthesis stores down because the
water potential gradient is less since there is more moisture in the air