Single correct option
Which one of the following elements is present in the chlorophyll molecule?
- A. Iron
- B. Calcium
- C. Magnesium
- D. Copper
Show answer and solution
Answer: (C) Magnesium
The central atom of the chlorophyll porphyrin ring is magnesium. Iron is found in haemoglobin, which is the standard comparison, and its lack causes anaemia. Without magnesium plants turn yellow, as chlorophyll cannot be made.
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