What Happens to the Tension in the Xylem When the Stomata

question 22

Multiple Choice

What happens to the tension in the xylem when the stomata close and evaporation stops?

• A)It goes to zero once evaporation ceases.
• B)It remains constant the moment the stomata close.
• C)It drops to a value closer to that of the water-filled pores in the soil.
• D)It continues to increase until the living cells of the leaf are fully hydrated.

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