Question

Movement of molecule of gases, liquids and solids from a region of higher concentration to a region of lower concentration is termed as

• A. Diffusion
• B. Evaporation
• C. Transpiration
• D. Osmosis

Answer 1

The correct option is A Diffusion

Diffusion is defined as the process of movement of particles from a region of higher to lower concentration. It is a physical process and does not require any living proteins or membranes. Diffusion occurs in all the media i.e., solid, liquid and gasses. Osmosis describes the movement of solvent or water only through a semipermeable membrane along the concentration gradient. Evaporation is a process shown by liquids, whereby the particles in liquid state jump towards the gaseous state. Transpiration is physiological evaporation of water.

So, the correct answer is option A.