Question

What is the difference between turgor pressure and wall pressure?

Answer 1

The hydrostatic pressure that is developed as a result of endosmosis is known as turgor pressure. The turgor pressure is exerted on the cell wall due to the entry of water inside the cell. The turgor pressure is responsible for the growth and enlargement of the cell. It also keeps the stem erect and leaves expanded.
Whereas the cell wall of the plant cell exert an equal and opposite pressure against the turgor pressure. This is known as the wall pressure. The endosmosis ceases when the turgor pressure becomes equal to the wall pressure. 

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Answer 2

Turgor pressure is the pressure exerted by the cytoplasm on the cell wall. During osmosis, when the cell is placed in a hypotonic solution (solution with less solutes and higher water potential) water moves from solution into the cells. This causes the cytoplasm to build the pressure against the cell wall. This pressure is called as turgor pressure. This pressure is exerted by the protoplast against the cell wall due to the entry of water is called as pressure potential. It is the turgor pressure in the plant cells which helps the plants to be erect. As the cell walls are strong, cells do not rupture but enlarge in size to cause extension in growth. Wall pressure is the pressure applied by the cell wall on the contents of the cell. Wall pressure is opposite to the turgor pressure.
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