Question

Identify and name the movement of molecules from a region of high concentration to a region of low concentration.

Answer 1

Diffusion:

1. Diffusion is the free movement of molecules from a region of high concentration towards a region of low concentration or along the concentration gradient.
2. It helps to maintain the equilibrium in the system.

Role of diffusion:

1. Diffusion helps in the exchange of gases during respiration.
2. It helps in water loss from the aerial parts of the plants by transpiration.