BRAINCAKEMovement of Water Through the Stomata
Stomata are pores in the leaves caused by the curvature of adjacent guard cells.
When guard cells become turgid the thinner outer walls stretch more than the thicker inner walls.
This creates a bowed shape that creates a pore between the guard cells through which gases can diffuse.
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Key terms in this lesson
- water potential
- The pressure created by water molecules, a measure of the tendency of water to move out of a solution; pure water has a water potential of zero and solutes make it more negative.
More in Mass Transport in Plants
- Movement of Water into the Root Hair Cells
- Movement of Water across the Roots
- Movement of Water Up the Stem
- Movement of Water Across the Leaf
- Translocation
- Phloem Loading
- Mass Flow through Sieve Tube Elements
- Mass Flow Model
All 15 lessons in Mass Transport in Plants · All AQA AS-level Biology topics