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During ion exchange method of mineral transport, the minerals are absorbed in the form of ions. In this type of mineral transport both the cations and the anions are absorbed by the cell wall and then it get exchanged with the ions present in the soil. This process of exchange of the ions between the ions of the cell wall and the ion solution is known as ion exchange.

The cations are exchanged with the hydrogen ions and anions are exchanged with hydroxyl ions. It is a passive transport mechanism where the metabolic energy is not involved.

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