DPD=OP-WP

DPD=OP+WP

DPD=WP-OP

DPD=TP+OP

    Reversible osmotic potential in the cells

    Reversible turgor pressure in the cell of their pulvini

    Due to less pressure potential in the cells

Presence of less turgidity in the cells

Water potential is the chemical potential of the water

Solute potential is always negative

    Pressure potential is zero in a flaccid cell

    Water potential equals solute potential in a fully turgid cell

$A o B o C$

$B o A o C$

$C o B \leftarrow A$

$A o C \leftarrow B$

Lower water potential

Less chemical potential

Less free energy

All of these

Suction pressure

Turgor pressure

Osmotic pressure

None of these

Decreases

Remains the same

Increases

Cannot be determined

    Osmosis

Process of active transport

Process of facilitated diffusion

Process of simple diffusion

${\psi _w} = {\psi _s} - {\psi _p}$

${\psi _s} = {\psi _w} + {\psi _p}$

${\psi _w} = {\psi _s} + {\psi _p}$

${\psi _p} = {\psi _w} + {\psi _s}$

Increased stomatal aperture during the day

Accumulation of organic acids at night

Reduced transpiration rates

Increased root-to-shoot ratio

Increase the solubility of the solute

Decrease the concentration of the solution

Cause the excess solute to settle at the bottom

Form a supersaturated solution