Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure-7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be

Options

A. movement of water from cell B-A
B. no movement of water
C. equilibrium between the two
D. movement fo water from cell A-B

Answer

D

Explanation

The water moves from lower DPD to higher DPD i.e., form cell A to cell B. This is because when a cell is placed in pure water, the water enters into the cells as a result of the diffusion pressure dificient (DPD) of cell sap. DPD = OP - TP.