Q30 / 200 · MHT CET - Medical 2026 (25 April Shift 1) · Biology

Match elements given in Column I with their functions given in Column II.
Column IColumn II
A. PhosphorusI. Essential for oxygen evolution in photosynthesis.
B. NitrogenII. Activation of certain enzymes.
C. CopperIII. Essential for phosphorylation reactions and constituent of certain proteins and all nucleic acids.
D. ChlorideIV. Constituent of proteins, vitamins, hormones, ATP and chlorophyll

  • A
    A-I, B-II, C-III, D-IV
  • B
    A-II, B-III, C-IV, D-I
  • C
    A-III, B-II, C-I, D-IV
  • Correct answer
    D
    A-III, B-IV, C-II, D-I

Solution

Phosphorus is a constituent of cell membranes, certain proteins, all nucleic acids and nucleotides, and is required for all phosphorylation reactions. Thus, A matches with III.

Nitrogen is required by plants in the greatest amount. It is a major constituent of proteins, nucleic acids, vitamins, hormones, ATP, and chlorophyll. Thus, B matches with IV.

Copper is essential for the overall metabolism in plants and is associated with the activation of certain enzymes involved in redox reactions. Thus, C matches with II.

Chloride, along with manganese and calcium, is essential for the water-splitting reaction in photosynthesis, which leads to oxygen evolution. Thus, D matches with I.

The correct matching is A-III, B-IV, C-II, D-I.

Answer: A-III, B-IV, C-II, D-I

Hence, the correct answer is option: 'D'.

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