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Cell A has osmotic potential of -18 bars and pressure potential of 8 bars, whereas, cell B has osmotic potential of -14 bars and pressure potential 2 bars. The direction of flow of water will beA. from cell B to cell AB. from cell A to BC. no flow of waterD. in both the directions |
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Answer» Correct Answer - A The water potential is the chemical potential of the water, which is equivalent to diffusion pressure deficit with negative sign. Therefore, water potential (`Psi_(A)`) of cell A is `Psi_(A)=Psi_(S)+Psi_(P)=-20+5=-15` bars `Psi_(B)=Psi_(S)+Psi_(P)=18+2=-2` bars Since, water moves from higher water potential to lower potential, the flow of water will be from cell B (-2 bars) to cell A (-15 bars). |
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