The evaporation of water from a plant's surface, especially the leaves
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How does light affect transpiration rate?
The lighter it is the faster the transpiration rate - this is because stomata open when its light to let CO2 in for photosynthisis
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How does temperature affect transpiration rate?
The higher the temperature the faster the transpiration rate - warmer molecules have more energy so can evaporate faster - this increases the water potential gradient between the inside and outside of the leaf - making water diffuse out faster
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How does humidity affect transpiration rate?
The lower the humidity the faster the transpiration rate - if the air around the plant is dry, the water potential gradient between the leaf and air is increased, which increases transpiration
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How does wind affect transpiration rate?
The windier it is the faster the transpiration rate - lots of air movement blows the water molecules away from the plant which increases the water potential gradient
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What is a potometre?
A piece of apparatus used to estimate the rate of transpiration
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What is translocation?
The movement of solutes to where they're needed in a plant
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What is another name for solutes?
Assimilates
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Other cards in this set
Card 2
Front
How does light affect transpiration rate?
Back
The lighter it is the faster the transpiration rate - this is because stomata open when its light to let CO2 in for photosynthisis
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