In a turgid cell, turgor pressure $(TP)$ is equal to $WP$ (wall pressure) so suction pressure or $DPD$ becomes zero i.e., no more water can come inside. It can be shown by the following equation
$DPD (SP) - TP - WP$$ \because TP - WP$ (in turgid cells)
$\therefore DPD$ or $SP - 0$
Osmosis is a passive process and happens without any expenditure of energy. It involves the movement of molecules from a region of higher concentration to lower concentration until the concentrations become equal on either side of the membrane.
There are three different types of solutions:
Isotonic Solution is one that has the same concentration of solutes both inside and outside the cell.
Hypertonic solution is one that has a higher solute concentration outside the cell than inside.
Hypotonic solution is one that has a higher solute concentration inside the cell than outside.