A cell kept in a certain solution bursts after some time. Comment upon the kind of solution.

Which process — diffusion, osmosis or active transport, needs involvement of energy?

Name the following :

(i) The state of a cell when it cannot accommodate any more water.

(ii) Pressure of the cell contents on the cell wall.

(iii) The condition that is opposite to turgid.

(iv) The state of a plasmolysed cell after the re-entry of water.

(v) The pressure under which water passes from the living cells of a root into xylem.

Look at figure. Why was oil added over water in the test tubes?