When a Plant Is Using Transpiration to Cool Off During

question 41

Multiple Choice

When a plant is using transpiration to cool off during the day, its stomates are _______ and its water potential is _______ negative than that of the soil. At night, the plant's water potential will be _______ that of the soil (assuming that the soil is receiving sufficient moisture) .

• A) open; more; roughly the same as
• B) open; more; more positive than
• C) open; less; roughly the same as
• D) closed; less; more positive than