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Question

Differentiate between the following:

  1. Turgor pressure and Wall pressure

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Solution

  1. Turgor pressure is the pressure exerted by the protoplasm and the vacuole against the cell wall.
  2. The pressure exerted on the contents of a plant cell by the cell wall that is equal in force and opposite in direction to the turgor pressure is referred to as wall pressure.

Turgor pressure

Wall pressure

1.Pressure exerted by the cell contents and protoplasm on the cell wall.1. Back pressure exerted by cell wall towards inside of the cell in a turgid cell. It is equal and opposite to turgor pressure.
2.Helps in keeping the plant erect and stomata open.2.Enables a cell to become turgid and bear the pressure without bursting.
3.Maintain the plant's upright posture, promote leaf expansion, and regulate stomata opening and closing3. Maintain the structure of the cells and plants

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