Question

Which of these is a macronutrient of plants?
A) Copper
B) Iron
C) Chlorine
D) Magnesium

Answer 1

Hint:The macronutrients are the nutrient that provides the calories or the energy and are required in large amounts to maintain the body functions and to carry out the activities of daily life.There are the three broad classes of the macronutrient: the proteins, the carbohydrates and the fats.

Complete answer:
There are two types of the nutrients that are absorbed by the plants- one is macronutrient and the other is micronutrient. The macronutrients are the nutrients that are absorbed by the large quantity such as the potassium, the sulphur, the calcium, the nitrogen, the phosphorus, the magnesium etc.
 Whereas the nutrients required in small amounts are called as the micronutrients such as the manganese, the boron, the cobalt, the molybdenum, the zinc, the iron, the copper and the iodine.

Additional information:
The copper is a chemical element with the symbol C. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has the pinkish orange color. Iron is the mineral that our bodies need for many of the functions.

The iron is part of the hemoglobin, a protein which carries the oxygen from our lungs throughout our bodies. It helps our muscles store and uses the oxygen.Iron is also part of many other proteins and the enzymes. The chlorine is a chemical element with the symbol Cl. It is the second lightest of the halogens, it appears between the fluorine and the bromine in the periodic table and its properties are mostly intermediate between them. Chlorine is the yellow green gas at room temperature

Therefore, the correct answer is option D.

Note:The nutrients can be divided into two categories: one is macronutrients, and the other is micronutrients. The macronutrients are those nutrients that the body needs in large amounts. These provide the body with the energy. The micronutrients are those nutrients that the body needs in the smaller amounts.