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

The process of osmosis shall cease when:

When a potato piece is kept in a highly concentrated salt solution,then

What is the movement of water by diffusion called?

$A$ cell when immersed in a solution,increases in volume,so the external solution 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 $; M$)?