A plant cell has a solute potential of -2.0 bars and pressure potential of 0.0. Its water potential is -2 bar. The cell will gain water or swell.
What is Water Potential ?
Water Potential is the potential energy of water in a system per unit volume relative to pure water , when both pressure and temperature are kept same. Water potential is never positive. It is expressed in kPa (Kilopascals). The symbol of water potential is ψ.
How to find the Water Potential ?
To find the water potential use this formula
[tex]\Psi = \Psi_{s} + \Psi_{p}[/tex]
where,
ψ = Water Potential
[tex]\Psi_{s}[/tex] = Solute Potential
[tex]\Psi_{p}[/tex] = Pressure potential
Now put the value in above expression we get
[tex]\Psi = \Psi_{s} + \Psi_{p}[/tex]
= -2.0 + 0.0
= - 2 bar
Thus from the above conclusion we can say that A plant cell has a solute potential of -2.0 bars and pressure potential of 0.0. Its water potential is -2 bar. The cell will gain water or swell.
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