Question : Atmospheric pressure theory was rejected for the ascent of – InterviewSolution

1.	Question : Atmospheric pressure theory was rejected for the ascent of sap because
Answer» there is no free surface at the lower end of the plant, which is necessary for the OPERATION of atmospheric pressure MAXIMUM height to which water can rise is about 50 m movement of the water is very slow and negligible and it forms only an infinitesimal SMALL fraction of the total this is not useful in ADHERING water to the walls of the xylem elements Answer :B

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