BI-2047
Factors affecting transpiration
Biology · Secondary 4 · Hard · Factors affecting transpiration
A gardener covers some plants with clear plastic bags on a hot, dry day and notices more water droplets forming inside the bags on windy days than on still days. Which statement best explains the effect of wind on transpiration rate?
- Wind increases humidity around the leaf, so less water evaporates.
- Wind cools the leaf so stomata close and transpiration stops.
- Wind removes moist air near the leaf, increasing the diffusion of water vapour out.
- Wind forces water into the leaf through the stomata, reducing transpiration.
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