In a fully turgid cell, which one of the following is zero?
A
OP
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B
TP
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C
SP
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D
None of the above
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Solution
The correct option is A SP Water enters a cell due to Diffusion Pressure Deficit (DPD) or Suction Pressure (SP). Water always flows from a region of lower DPD to higher DPD. The mathematical relation for determining DPD (or SP) is OP - TP.
When a cell is fully turgid, its OP is equal to TP and DPD or SP is zero. The turgid cell cannot absorb any more water.