In osmosis,there is movement of

$A$ cell swells up when kept in

Roots will absorb water when the external medium is

$A$ cell is placed in $0.4 \; M$ solution of sugar and no change in volume of cell is found. What is the concentration of the cell sap (in $; M$)?

$A$ plasmolysed cell can be deplasmolysed by placing it in

If the osmotic pressure of the cytoplasm in a cell is balanced by an external solution,the solution must be