|
Stomatal closing
- Potassium ions move out of the vacuole and out of the cells.
- Water moves out of the vacuoles, following potassium ions.
- The guard cells shrink in size.
- The stoma closes.
Stomatal opening
- Potassium ions move into the vacuoles.
- Water moves into the vacuoles, following potassium ions.
- The guard cells expand.
- The stoma opens.
|