With a decrease in atmospheric pressure, the rate of transpiration willA. Remain unaffectedB. IncreaseC. Decrease slowlyD. Decrease rapidly
The rate of transpiration in plants is affected by various factors, including atmospheric pressure. When atmospheric pressure decreases, the rate of transpiration generally tends to increase. This is because lower atmospheric pressure creates a greater pressure gradient between the inside of the leaf and the surrounding atmosphere, leading to enhanced water loss through transpiration to equalize the pressure difference. Therefore, the correct answer is B. Increase.
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