Diffusion

The movement of minerals into the cell or tissue without the expenditure of energy is called passive absorption. This is a physical phenomenon. Passive absorption takes place by following ways: (a)               DIFFUSION The concentration of ions inside the root cells is several times more

The movement of molecules from higher concentration to lower concentration is called diffusion. Diffusion occurs down the concentration gradient. It is a spontaneous process. Diffusion continues till dynamic equilibrium is achieved. It follows laws of thermodynamics. But it is a very slow process. The