06 Plant Water Relation - part 06 - Plasmolysis

06 Plant Water Relation - part 06 - Plasmolysis


Plasmolysis: 
  • Exo-osmosis in a living cell when placed in hypertonic solution, is called plasmolysis. 
  • During plasmolysis, protoplast of cell shrinks and recedes from cell wall. Thus, cell becomes flaccid. 
  • In a plasmolysed cell, a gap is developed between cell wall and the protoplast. This gap is filled up by outer solution.
  • In a plasmolysed cell, T. P. is always zero. 
  • When such cell is placed in hypotonic solution, endo-osmosis occur, making cell turgid. This is called deplasmolysis. 
  • In a fully turgid cell T. P. = O. P. hence, DPD is always zero.

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