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InterviewSolution
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Three uniformly watered plants i, ii and iii were kept in 45% relative humidity, 45% relative humidity with blowing wind and 95% relative humidity, respectively. Arrange, these plants in the order (fastest to slowest) in which they will dry up.(a) i → ii → iii(b) ii → i → iii(c) iii → ii → i(d) iii → i → ii |
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Answer» Answer is : (b) ii → i → iii The plants in the order (fastest to slowest) in which they will dry up is ii → i → iii. Relative humidity is the amount of water vapour present in air expressed as a percentage of the amount needed for saturation at the same temperature. As plants transpire, the humidity around saturates leaves with water vapour. When relative humidity levels are too high or there is a lack of air circulation, a plant cannot make water evaporate by transpiration or draw nutrients from the soil. Therefore 95% relative humidity will dry up the slowest, and the 45% relative humidity with blowing wind will dry up the fastest. |
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