BI-890
Factors affecting transpiration
Biology · Secondary 3 · Hard · Factors affecting transpiration
In an experiment, a leafy shoot is placed in a potometer in front of a fan. The rate of movement of the air bubble is recorded. The fan is then switched off. Which statement correctly describes what happens to the rate of transpiration after the fan is switched off?
- It increases because less water vapour accumulates around the leaves.
- It decreases because the air around the leaves becomes more humid.
- It stays the same because wind does not affect transpiration.
- It stops immediately because stomata close when wind is removed.
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