BI-2020
Factors affecting transpiration
Biology · Secondary 4 · Medium · Factors affecting transpiration
A student investigates how wind speed affects transpiration in a potted plant. She places a fan near the plant and increases the wind speed while keeping light and temperature constant. What happens to the rate of transpiration, and why?
- It increases because moist air is removed, keeping the diffusion gradient steep.
- It decreases because wind cools the leaf and stops evaporation.
- It stays the same because wind only affects photosynthesis, not transpiration.
- It stops because stomata close immediately when wind speed increases.
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