Question

Match the following columns:
$\begin{array}{cc}Column-I& Column-II\\ \text{A. Nitrogen}& \text{1. Component of cell membrane}\\ \text{B. Phosphorus}& \text{2. Role in cell division}\\ \text{C. Potassium}& \text{3. Constituent of enzymes}\\ \text{D. Calcium}& \text{4. Involved in stomatal movement}\end{array}$

• A. A - 3, B - 1, C - 4, D - 2.
• B. A - 1, B - 3, C - 1, D - 1.
• C. A - 4, B - 2, C - 3, D - 3.
• D. A - 2, B - 4, C - 2, D - 2.

Answer 1

The correct option is A

A - 3, B - 1, C - 4, D - 2.

Nitrogen is constituent of proteins, enzymes, hormones, vitamins etc. Phosphorus is a component of cell membrane, nucleic acids etc. Potassium maintains ion balance and helps stomatal opening and closing. Calcium plays important role in spindle formation and cell plate formation.