Transpiration (Grade 10 NSC Matric Life Sciences): Flashcards
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Definition of transpiration
Definition of transpiration
Loss of water vapour through stomata in plants
Function of guard cells
Function of guard cells
Control opening and closing of stomata
Three functions of transpiration
Three functions of transpiration
Cooling, transpirational pull, structural support
Transpirational pull definition
Transpirational pull definition
Pulling force drawing water up through xylem from roots
Effect of high temperature on transpiration
Effect of high temperature on transpiration
Increases transpiration rate
Effect of low humidity on transpiration
Effect of low humidity on transpiration
Increases transpiration due to steep water gradient
Purpose of a potometer
Purpose of a potometer
Measures how quickly plants lose water via transpiration
Definition of wilting
Definition of wilting
When water loss exceeds water uptake in plants
Definition of guttation
Definition of guttation
Liquid water droplets oozing from leaf edges/tips
Guttation vs transpiration: water form
Guttation vs transpiration: water form
Guttation = liquid; Transpiration = vapour