BI-776
Factors affecting transpiration
Biology · Secondary 3 · Medium · Factors affecting transpiration
A leafy shoot is placed in a beaker of water. Its stem is cut under water and connected to a potometer to measure transpiration rate. A fan is switched on to blow air across the leaves. What effect will this have on the rate of transpiration?
- It decreases because the stomata close immediately in moving air.
- It decreases because the air around the leaf becomes more humid.
- It increases because the air around the leaf is replaced by drier air.
- It is unchanged because wind does not affect water loss from leaves.
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