A cell 'A' having osmotic potential –15 atm and wall pressure 10 atm, present adjacent of cell 'B' having osmotic potential –20 atm and wall pressure 11 atm, the flow of water would be :-
(1) From A to B
(2) From B to A
(3) Equal flow
(4) No flow
(1) From A to B Water potential of cell A is -15+10= -5 atm; Water potential of cell B is -20+11= - 9 atm; Water moves from the region of higher water potential to the region of lower water potential; Thus, water will move from cell A to B.