Multiple choice

Which of the following metals is present in chlorophyll?

  1. Beryllium

  2. Magnesium

  3. Calcium

  4. Barium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Magnesium is the central metal atom in the chlorophyll molecule, essential for photosynthesis. The magnesium ion (Mg2+) sits at the center of the porphyrin ring structure. Beryllium, calcium, and barium are not part of chlorophyll structure, though calcium plays roles in other plant processes like cell wall stability.

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