Difference between Micronutrients and Macronutrients – Comparison Table

Micronutrients vs macronutrients

Micronutrients vs Macronutrients
(Difference between Micronutrients and Macronutrients in Plants)

Nutrients are chemical substances required for the proper growth and functioning of all living organisms including plants and animals. The nutrients are also called essential elements because, in the absence of these chemicals, plants and animals cannot complete their life cycle. Important nutrients required by the plants for their proper growth are C, H, O, N, P, K, Cs, S, Mg, Fe, Mn, Cu, Zn, Mo, B, Cl and Ni. Except for C, H and O, all other nutrients are absorbed from soil as inorganic ions by the root cells.

Learn more: Mineral Absorption in Plants

In Plants, the nutrients are classified into two categories based on how much quantity they are required by the cells. They are (1) Micronutrients and (2) Macronutrients.

Micronutrients: These nutrients are required in very less amount when compared to macronutrients. Micronutrients of plants are Fe, Mn, Cu, Zn, Mo, B, Cl and Ni.

Macronutrients: These nutrients are required in relatively large amounts for the proper functions of the cells. C, H, O, N, P, K, Cs, S and Mg are the macronutrients of plants. Among these, C, H, and O are NOT absorbed from the soil by root. N, P and K are called Primary nutrients. Ca, S and Mg are called Secondary nutrients.

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Mechanism of Mineral Absorption in Plants (Plant Physiology Short Notes)

Passive and Active Mineral Absorption

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.

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