Difference between Diffusion and Osmosis is__

The correct answer is option A. A semipermeable membrane is required for osmosis while diffusion requires no semipermeable membrane.

Explanation

What Are Diffusion and Osmosis?

• Diffusion: It is the movement of particles (solute or solvent) from an area of higher concentration to an area of lower concentration until equilibrium is reached. No semipermeable membrane is required.
• Osmosis: It is the movement of solvent molecules through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration. Osmosis is specific to solvent molecules and always involves a semipermeable membrane.

What is the Difference between Diffusion and Osmosis?

Based on the differentiation:

Osmosis fundamentally requires a semipermeable membrane to regulate the selective movement of solvent molecules. Without this membrane, the process cannot occur. Diffusion, on the other hand, is a general movement of particles and does not involve a semipermeable barrier.

This core distinction justifies why option A is the correct choice, as it highlights the necessity of a semipermeable membrane exclusively for osmosis.

Common Doubts