A Primary Result for Stomatal Closure on a Hot, Dry

question 69

Multiple Choice

A primary result for stomatal closure on a hot, dry day would be

• A) release of K⁺ ions to the apoplast and subsidiary cells.
• B) displacement of Ca⁺⁺ ions from the thick inner walls of the guard cells.
• C) disassembly of the microfibrils in the cell walls of the subsidiary cells.
• D) upregulation of aquaporin synthesis.
• E) downregulation of extension proteins.

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Definitions:

Forward Exchange Rates

Exchange rates at which two parties agree to exchange currencies at a future date.

Interest Rate Parity

A theory which states that the difference in interest rates between two countries is equal to the difference between the forward exchange rate and the spot exchange rate.