BI-2037
Factors affecting transpiration
Biology · Secondary 4 · Medium · Factors affecting transpiration
In another potometer experiment, a fan is switched on so that air blows across the leaves. Compared with still air, what happens to the rate of transpiration and why?
- It increases because moist air is removed, steepening the water vapour gradient.
- It decreases because stomata close when air is moving.
- It stays the same because air movement does not affect diffusion.
- It decreases because air movement cools the leaf surface.
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