BRAINCAKEPhloem Unloading
Sucrose is actively transported out of the sieve tubes into the sink cells.
This creates a high water potential at the sink.
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Key terms in this lesson
- osmosis
- The net movement of water molecules from a region of higher water potential to a region of lower water potential through a selectively permeable membrane.
- water potential
- A measure of the tendency of water molecules to move out of a solution; pure water has a water potential of zero and adding solute lowers it.
More in Mass Transport in Plants
- Translocation
- Phloem Loading
- Mass Flow through Sieve Tube Elements
- Mass Flow Model
- Ringing Experiments
- Tracer Experiments
- Evidence for Translocation in Phloem
- Xerophytes
All 18 lessons in Mass Transport in Plants · All OCR AS-level Biology topics