What Happens to the Guard Cells as K⁺ and Cl^-

question 161

Multiple Choice

What happens to the guard cells as K⁺ and Cl^- enter the cell?

• A) The water potential goes up (i.e., becomes less negative).
• B) The water potential goes down (i.e., becomes more negative).
• C) Water leaves by osmosis.
• D) The stoma closes.
• E) The guard cells shrink.

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