a) Plant cell in hypotonic solution e. g. distilled water
If a plant cell is placed in water or hypotonic solution, the cell will draw water from the hypotonic solution through osmosis causing the cell to distend.
The cellulose cell wall is rigid and does not allow plant cells to burst as in the case of animal cells.
As the cell gains more water, the vacuole enlarges and exerts an outward an outward pressure on the cell wall called turgor pressure.
The turgor pressure increases as more water is taken into the vacuole causing the cell to stretch until the cell cannot stretch any more. The cell becomes firm and is said to be turgid.
Turgor pressure is the outward pressure that the cell cytoplasm exerts on the cell wall as it gains more water through osmosis.
When the cell wall is being stretched towards the outside, it will develop a resistant pressure to stretching that is equal and opposite to turgor pressure called wall pressure. b) A glam cell in a hygertonic solution
When placed in a hypertonic solution, the plant cell will lose water to the solution through osmosis. As the water moves out of the cell, the cell starts to shrink, becomes less rigid or ?abby and is said to be ?accid.
If the cell loses more water, its contents reduce in size and the plasma membrane pulls away from the cell wall towards the centre. The process through which plant cells lose water, shrink and become ?accid is called plasmolysis.
Plasmolysis can be reversed when a ?accid cell is placed in distilled water in a process called deplasmolysis.
Anganifelix answered the question on May 8, 2018 at 12:34
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