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Question

Cell A has osmotic potential of -18 bars and pressure potential of 8 bars whereas, cell b has osmotic potential of -14bars and pressure potential 2 bars, the direction of flow of water will be


A
From cell B to cell A
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B
From cell A to cell B
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C
No flow of water
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D
In both the direction
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Solution

The correct option is B From cell A to cell B
  • Water flows from higher water potential to lower water potential. The water potential is calculated by the sum of osmotic potential and pressure potential. Using this formula water potential of cell A comes out to be -10 bars, 
  • whereas the water potential of cell B comes out to be -12 bars. Hence, water will flow from cell A (higher water potential) to cell B (lower water potential).

Biology

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