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Q.

Cell 'A' with osmotic pressure, + 6 and wall pressure, +5 is surrounded by the cells with  osmotic pressure, + 3 and wall pressure, +2, What will be direction of water movement?

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a

From A to other cells

b

From other cells to A

c

No net movement

d

Total movement of water from other cells to cell A

answer is C.

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Detailed Solution

DPD = Osmotic potential – Wall pressure. The direction of movement of substances  takes place from a region of lower to higher DPD

DPD = OP-TP(WP)

 For cell A :- 6 - 5 = 1 ; other cells = 3 -2 = 1

Here DPD is same so there is no net movement of water.

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