Q1.
Match elements given in Column I with their functions given in Column II.
| Column I | Column II |
|---|---|
| A. Phosphorus | I. Essential for oxygen evolution in photosynthesis. |
| B. Nitrogen | II. Activation of certain enzymes. |
| C. Copper | III. Essential for phosphorylation reactions and constituent of certain proteins and all nucleic acids. |
| D. Chloride | IV. Constituent of proteins, vitamins, hormones, ATP and chlorophyll |
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