In the process of osmosis,the volume of the solvent:

Explain: Plasmolysis.

Read the given statements regarding the different stages of plasmolysis and choose the correct option.
$I.$ First stage of plasmolysis,when osmotic concentration of cell sap is just equivalent to that of external solution.
$II.$ Protoplast withdraws itself from the corners of the cell wall.
$III.$ Protoplast gets detached from the cell wall and attains a spherical shape.

Which of the following is affected by the hydration of solute molecules?

If a cell is reduced in size on placing it in a sugar solution,the solution is:

$A$ leaf peeling of Tradescantia is kept in a medium having $10 \% \;NaCl$. After a few minutes,if we observe the leaf peel under the microscope,we are likely to see