Transpiration pull will be maximum under which of the following conditions?
Options:
A . Open stomata, high intensity of light and well irrigated soil
B . Open stomata, high humid atmosphere and dry soil
C . Closed stomata, low light intensity and humid atmosphere
D . Open stomata, low light intensity and humid atmosphere
Answer: Option A : A It is essential that stomata is open for transpiration to occur. But for the stomata to remain in an open state, light is essential, because light plays a role in the accumulation of potassium ions in the guard cell, which ensures that the guard cells remain turgid and thus maintaining stomata in the open state. Humidity is a also a factor that affects transpiration. High humidity means high water vapor content in the atmosphere and when atmosphere is saturated with water vapor, it does not vaporize easily through transpiration.
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