In the Mechanism of Stomatal Opening, After Light Activates Proton

question 45

Multiple Choice

In the mechanism of stomatal opening, after light activates proton pumps which of the following happens next?

• A) Guard cells change shape.
• B) Hydrogen ions are actively transported out of guard cells.
• C) Potassium ions diffuse into guard cells.
• D) Chloride ions diffuse out of guard cells.
• E) Water moves by osmosis into guard cells.

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