Question

Differentiate between TP and WP in plant cells. List any four ways in which turgidity serves a useful purpose in the plants.

Answer 1

Hint: TP is called as Turgor Pressure is the pressure developed inside the cell due to the entry of a solvent. Wall pressure is pressure against the turgor pressure.

Complete answer:

TURGOR PRESSURE	WALL PRESSURE
Pressure exerted by the protoplasm against the cell wall.	The pressure exerted by the cell wall against the turgor pressure.
Its action takes place on the cell wall.	It is generated by the cell wall.
The process takes place outside the cell.	It occurs inside the cell.
It keeps the plant erect.	It maintains the structure of the plant.
Turgid is the swollen state of a cell.	It is a normal state.

TP is the pressure inside the cell developed due to the entry of a solvent and its magnitude depends upon on the amount of water entering the cell.
WP is the pressure is the force exerted by the cell wall against the turgor pressure and hence its magnitude depends on the turgor pressure and depends on the nature of the cell wall.
Turgidity is useful for plants as:
> Maintains the rigidity of the cell.
> It makes the surface of the leaf properly exposed to sunlight.
> It helps in opening of stomata by guard cells.
> It helps in maintaining shape.
> It helps in mobility of phloem sap.

Note:
Turgor pressure is usually equal to the wall pressure. In fully turgid cells, turbo pressure is equal to the osmotic pressure.