Question
Living. cells placed in isotonic solution (0.9% saline) retain their size and shape. This is based on the concept of
osmosis
diffusion
facilitated diffusion
transpiration
Solution
A.
osmosis
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.
