| Column-$I$ | Column-$II$ |
| $(A)$ Potassium | $(1)$ Constituent of ferredoxin |
| $(B)$ Sulphur | $(2)$ Involved in stomatal movement |
| $(C)$ Molybdenum | $(3)$ Needed in the synthesis of auxin |
| $(D)$ Zinc | $(4)$ Component of nitrogenase |
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| Column-$I$ (Element) | Column-$II$ (Function) |
|---|---|
| $A$. Calcium | $I$. Required for ionic balance |
| $B$. Boron | $II$. Essential for constitution of nucleic acid |
| $C$. Phosphorus | $III$. Required for absorption of calcium |
| $D$. Chlorine | $IV$. Required to activate respiratory enzyme |
| $E$. Manganese | $V$. Required for synthesis of mitotic spindle |
| Column $I$ | Column $II$ |
| $(a)$ Boron | $(p)$ For $CO_2$ transport |
| $(b)$ Copper | $(q)$ Essential for nitrogen fixation |
| $(c)$ Molybdenum | $(r)$ Essential for sugar translocation in plants |
| $(d)$ Chlorine | $(s)$ Essential for chlorophyll synthesis in plants |
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