What are the conditions for osmosis?

By Ritesh|Updated : September 4th, 2022

Osmosis is the movement of molecules from a higher concentration region to a lower concentration region until the concentrations become equal on either side of the membrane. It is a passive process that happens without spending any energy. Any solvent, including supercritical liquids and gases, can undergo the process. Osmosis is of two types:

  • Endosmosis– If a substance is placed in a hypotonic solution, the solvent moves inside the cell, which becomes turgid and undergoes deplasmolysis. It is known as endosmosis.
  • Exosmosis– If a substance is placed in a hypertonic solution, the solvent moves outside the cell, which becomes flaccid and undergoes plasmolysis. It is known as exosmosis.

Significance of Osmosis

  • The release of metabolic waste products and transport of nutrients is influenced by osmosis.
  • It is responsible for the water absorption from the soil and conducts it to the upper parts through the xylem.
  • The internal environment of an organism is stabilized by maintaining the balance between intercellular fluid and water levels.
  • It maintains cell turgidity.
  • It is a process in which plants maintain their water content apart from water loss because of transpiration.
  • It controls cell-to-cell water diffusion.
  • It induces cell turgor that regulates the plant and plant parts' movement.
  • It controls the dehiscence of sporangia and fruits.


What are the conditions for osmosis?

The conditions for osmosis are, that the two solutions should have different concentrations, and the membrane separating the solutions should be semi-permeable. High osmotic pressure protects plants from drought injury.


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