Question

Which of the following process does not requires a semi permeable membrane?

• A. Osmosis
• B. Diffusion
• C. Active transport
• D. Transpiration

Answer 1

The correct option is B

Diffusion

The correct option is b

Explanation of the correct option:

1. Diffusion is the process of movement of molecules under a concentration gradient.
2. It is an important process occurring in all living beings.
3. Diffusion helps in the movement of substances in and out of the cells.
4. The molecules move from a region of higher concentration to a region of lower concentration until the concentration becomes equal throughout.

Explanation of the incorrect option:

Option a :

1. A process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.

Option c:

1. The movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

Option d:

1. Transpiration is a process by which water is lost from the plants in the form of water vapour.
2. As the loss of water takes place, it can sometimes also lead to the death of the plant.
3. Though this process can affect the plant badly, still it is very important for the plants.