Mineral Absorption in Plants
(The Mechanism of Active and Passive Absorption of Minerals in Plants)
Plants absorb minerals as ions
Plants absorb minerals from the soil in the form of inorganic ions. Earlier it was thought that the absorption of minerals takes place in plants along with the absorption of water. In fact, the process of mineral absorption and water absorption are two separate processes. In order to absorb any minerals from the soil, it should be dissolved in the water.
Plants absorb most of the minerals through the roots. The large surface area of roots and its ability to absorb minerals from the soil even in minor concentration makes the roots more efficient in mineral absorption than any other organs. In roots, the mineral absorption usually takes place through the meristematic region of the root tip.
Minerals can be absorbed by both Passive and Active Methods
There are two types of mineral absorptions based on the involvement of metabolic energy. They are (1) Passive minerals absorption (2) Active minerals absorption.