Four pairs of plant nutrients are given out of which three are alike in some manner and one is different. Select the pair that is different.?

Option 2 : Copper and Manganese

The correct answer is Copper and Manganese.

Concept:

Mineral nutrition:

• Minerals: These can be defined as the naturally occurring inorganic nutrients that are found deep under the soil.
• These nutrients are taken up by plants from the soil through their roots.
• The nutrients perform several functions and take part in various metabolic processes in plant cells.
• It includes maintenance of osmotic pressure, the permeability of the membrane, enzymatic activity, and many more.

Explanation:

Minerals are categorized as Macronutrients and Micro-nutrients.

Macronutrients:

• The nutrients present in plants in larger amounts are macronutrients.
• It includes Nitrogen, calcium, Potassium, Magnesium, Phosphorus, and sulphur. 

Micronutrients:

• The nutrients required in little amounts are known as trace or micronutrients.
• It includes Iron, Boron, Manganese, Zinc, Copper, Nickel, and Molybdenum.

Thus, copper and manganese are the odd ones out.