Two cells P and Q are contiguous. Cell P has osmotic pressure of 20 atm and turgor pressure of 10 atm. Cell Q has osmotic pressure of 10 atm and turgor pressure of 5 atm. This results in:

# Two cells P and Q are contiguous. Cell P has osmotic pressure of 20 atm and turgor pressure of 10 atm. Cell Q has osmotic pressure of 10 atm and turgor pressure of 5 atm. This results in:

1. A

No water movement between cell P and Q

2. B

Water flows from cell P to cell Q

3. C

Water flows from cell Q to cell P

4. D

Equilibrium between the two cells

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### Solution:

DPD= OP-TP
OP= Osmotic pressure
TP= Turgor pressure

DPD of cell P= 20-10=10atm
DPD of cell Q= 10-5= 5atm

Water always flows from lower DPD to higher DPD. In this case cell Q has lower DPD as compared to cell P. Therefore, water will flow from cell Q to cell P.

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