ANATOMY

Detailed explanation-1: -diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.

Detailed explanation-2: -Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration . Diffusion occurs in liquids and gases when their particles collide randomly and spread out. Diffusion is an important process for living things-it is how substances move in and out of cells.

Detailed explanation-3: -Definition: The process of movement of a substance (solid, liquid, or gas) from the region of higher concentration to the region of lower concentration so as to spread uniformly is called diffusion. In the process of diffusion the molecules of the one substance mix with the molecule of the other substance.

Detailed explanation-4: -1. What is diffusion? Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration down the concentration gradient.

Detailed explanation-5: -Diffusion can be defined as the movement of molecules from an area of their higher concentration to an area of their lower concentration. So, the correct answer is ‘Movement of molecules from an area of their higher concentration to an area of their lower concentration’.