What are the essential elements for plants? Give the criteria of essentiality? How are minerals classifieds depending upon the amount in which they are needed by the plants?

Solution: The macro and microelements are the two sorts of vital elements. Calcium, magnesium, and other macro elements, for example, are abundant. Microelements, such as iron and zinc, are present in trace levels.

Essentiality criteria: Essentiality is determined not only by the existence of a certain element in the plant, but also by the following criteria:

1. A plant cannot grow or reproduce without an element.

2. Because the element is unique, it cannot be substituted by other elements.

3. The element is involved in the metabolic process directly.