Which of the following elements is radioactive and is found in plants growing near nuclear test sites?

$A$ : All the diverse mineral elements found in plants are not essential for them.
$R$ : Some plants accumulate heavy and toxic minerals such as gold and selenium from the soil.

How many macronutrients are absorbed from the soil in the form of minerals?

The concentration of elements such as carbon and nitrogen in plants is

Some beneficial elements such as ........... are required by higher plants.

In plant nutrition,elements are classified as major or minor depending on: