Question

Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm and turgor pressure 7 atm. Cell B has osmotic pressure 8 atm and turgor pressure 3 atm. The result will be:

• A. Movement of water from cell A to B
• B. Movement of water from cell B to A
• C. No movement of water
• D. Equilibrium between the two cells

Answer 1

The correct option is A Movement of water from cell A to B

Diffusion pressure deficit is given by:
DPD = OP - TP
Cell A: DPD = 10 - 7 = 3 atm
Cell B: DPD = 8 - 3 = 5 atm
Movement of water will be from low DPD to high DPD, i.e., from A to B.