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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Saurabh 1
It has to be -100kPa most probably. Well you might be aware of the fact that the water potential of a substance represents the measure of potential energy in water molecules in a system as compared to that of pure water. It is also a measure of the tendency of water to move from one region to another. Usually, water will move from the region of high water potential to the region of low water potential. Hence, for water to move from the soil into the root, the root must have a lower water potential than the soil.