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| Some Interesting Features |
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 Plants wilt when turgor pressure inside the cells of such tissues go down below zero. |
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Pressure chamber is used for measuring water potential of whole leaves, shoots, etc. |
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The value of osmotic pressure of the soil solution in a well watered soil is less than one atmosphere. |
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Osmotic pressure does not increase by addition of insoluble solutes in solution. |
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Tensiometer is the instrument for measuring soil water tension. |
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Auxin treated cells can absorb water even from hypertonic solution by active process. |
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Root pressure is absent in gymnosperms. |
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Imbibitional force in pea is 1000 atm. |
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Cohesive force of water is called tensile strength of water. |
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In soft stem, the ascent of sap can be prevented by applying squeezing pressure which closes the lumen of the xylem channels. |
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Psychrometer is used to measure atmospheric humidity as well as water transpired. |
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Blue light of visible spectrum promotes stomatal opening. |
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