LABORATORY REVIEW
TRANSPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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atmospheric humidity of the surrounding air is greater than that in the leaf
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ABA is not being released by the plant
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there is sufficient water available within the soil
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light intensity is just normal
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Detailed explanation-1: -Variables Affecting Transpiration Rates As the temperature increases, transpiration will increase due to a higher concentration in sunlight and warm air. However, if temperatures remain high for long periods of time eventually leading to drought, transpiration may go down to conserve water in the plant.
Detailed explanation-2: -When the relative humidity is high, the atmosphere contains more moisture. This lowers the driving force for transpiration. Lower relative humidity levels correspond to less moisture in the atmosphere and thus a higher driving factor for transpiration.
Detailed explanation-3: -Warmer temperatures generally lead to higher transpiration rates, while higher humidity levels decrease the rate of water loss. Additionally, windy conditions and bright sunlight also increase the rate of transpiration.
Detailed explanation-4: -At high atmospheric humidity, transpiration is low. This is because the rate of transpiration is directly proportional to the saturation deficit. It is dependent on the gradient of vapor pressure. Thus, the higher the humidity, the lower the rate of transpiration.