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Question
When water enters into a cell what happens to its OP, TP and DPD?
When water enters into a cell what happens to its OP, TP and DPD?
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Solution
The correct option is A OP and DPD decrease and TP increase
Water moves from an area of lower diffusion pressure deficit (DPD) to an area of higher DPD. The value of DPD is calculated as the algebraic difference between osmotic pressure and turgor pressure. In a flaccid cell, the turgor pressure is zero and hence DPD will be equal to the osmotic pressure. As water enters a cell, there is an increase in turgor pressure, as the solution in cell sap turns less concentrated there is a fall in osmotic pressure and consequently the DPD falls. In a fully turgid cell, the value of DPD is equal to zero and turgor pressure is numerically equal to osmotic pressure. Thus, the correct answer is option D.
Water moves from an area of lower diffusion pressure deficit (DPD) to an area of higher DPD. The value of DPD is calculated as the algebraic difference between osmotic pressure and turgor pressure. In a flaccid cell, the turgor pressure is zero and hence DPD will be equal to the osmotic pressure. As water enters a cell, there is an increase in turgor pressure, as the solution in cell sap turns less concentrated there is a fall in osmotic pressure and consequently the DPD falls. In a fully turgid cell, the value of DPD is equal to zero and turgor pressure is numerically equal to osmotic pressure.
Thus, the correct answer is option D.
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