How many elements have been found to be essential for plants

How many elements are found in nature?

How many elements are essential for plants ?

Even though more than sixty elements are found in different plants, all are not essential. Write any two criteria for the essentiality of an element.

Which of the following elements is non-essential for plants but have a functional role?

Which of the following elements is non-essential for plants but have a functional role?

Non - essential element in plant is

What are essential elements for plants.