Which of the following is a living semi-permeable membrane ?

1. Cell wall
2. Cell membrane
3. Cellulose
4. None

Addition of salt to pickles is a method of killing the bacteria by :

1. Imbibition
2. Diffusion
3. Deplasmolysis
4. Plasmolysis

Two plant cells are placed in two different liquids and observed after 4-6 hours.

Identify the correct pair of the processes happening in plant cells P and Q.

1. P - Plasmolysis, Q - Deplasmolysis
2. P - Plasmolysis, Q - Turgidity
3. P - Exosmosis, Q - Endosmosis
4. P - Endosmosis, Q - Exosmosis

Mary soaked some raisins in beakers containing sugar solution, distilled water, salt solution and sea water respectively. After a couple of days, she observed that raisins have changed their shapes. In which of the following solutions will the raisins become turgid ?

1. Sugar solution
2. Distilled water
3. Salt solution
4. Sea water