Water potential gradient
What Water potential gradient means in Biology A-Level, as defined for OCR.
Definitions of Water potential gradient
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Reference: OCR
The gradient down which water vapour diffuses out through stomata into the surrounding air, and which drives the transpiration stream.
The continuous gradient from soil to atmosphere that drives the whole pathway of water movement.
Topics that use Water potential gradient
- Transport in plants (OCR A-Level)
Related terms
- Cohesion and adhesion
- Control of environmental variables
- Hydrophyte
- Osmosis
- Potometer
- Rate calculation
- Source-to-sink transport of assimilates
- Surface area to volume ratio in plants
Using Water potential gradient in the exam
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