A) osmosis
B) diffusion
C) facilitated diffusion
D) transpiration
Correct Answer: A
Solution :
When living cells are placed in isotonic solution, they retain their shape and size as such because no osmotic movement of water molecules takes place. If a plant cell is placed in hypertonic solution, the cell gets plasmolysed due to exosmosis. On the other hand, if a plasmolysed cell is placed in hypotonic solution, endosmosis occurs and the cell gets deplasmolysed.
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