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What is pressure potential ?


It is a positive pressure which refers to wall pressure and turgor pressure applied by the liquod material on the walls of the cell.
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Name the substance which has maximum imbibition capacity.

Agar. It can absorb water 99 times its own weight.
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What is the value of water potential to fully turgid cell and why ?

Water potential of full turgid cells is zero
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What is the value of water potential to fully turgid cell and why ?

Water potential of full turgid cells is zero. Fully turgid cell has the highest water potential . As water enters the cell the water apllies pressure against the walls of the cell. In the case of a fully turgid cell, no more water can enter the cell, thus it has the highest water potential. The pressure potential becomes equal to the solute potential in magnitude. The solute potential is negative and the pressure potential is postive. Water potential is given by the equation -
 ψw  = ψs  + ψp 
Therefore the water potential becomes zero when solute potential becomes equal to the pressure potential. 
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If the osmotic potential is - 0.1 then what will be the value of osmotic pressure.

Since the osmotic pressure and osmotic potential are equivalent numerically but opposite in signs, the value of osmotic pressure will be +0.1 or just 0.1
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