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10 cards from this deck
Loss of water vapour from leaves through stomata
Pores in leaf epidermis surrounded by guard cells
Increases rate (very high temps close stomata)
Higher humidity reduces gradient, decreases rate
Removes water, maintains gradient, increases rate
Darkness closes stomata; low threshold, rarely limiting
Measures water uptake (approximates transpiration)
Prevents air entering xylem/prevents airlocks
πr² × distance moved
Evaporation from leaves, NOT movement up stem
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