$A$ flowering plant is planted in an earthen pot and irrigated. Urea is added to make the plant grow faster,but after some time the plant dies. This may be due to $..........$

When a plant cell is kept in a saline solution,the cell:

How would the molecules of water behave if pure water is separated from a colloidal suspension with the help of a selectively permeable membrane? It would cause a net movement of water to:

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.

If we apply pressure from the top on the solution in the stem of a thistle funnel, we can prevent the entry of water through osmosis. The pressure at which the entry of water through a semi-permeable membrane is stopped is called ........

Differentiate between the following: Diffusion and Osmosis.