Explain with examples: macronutrients, micronutrients, beneficial nutrients, toxic elements and essential elements.

Non - essential element in plant is

Explain the oxidation states of 4d series elements.

Which one of the following roles is not characteristic of an essential element?

Identify the wrong statement(s). (i) Molybdenum is a micronutrient. (ii) Carbon, Hydrogen, Nitrogen are skeletal elements. (iii) Manganese is the activator for RUBP carboxylase. (iv) Potassium maintains osmotic potential of the cell.

Explain the important common features of Group 2 elements