MCQ
Which metal ion is a constituent of chlorophyll?
- AIron
- BCopper
- CMagnesium
- DZinc
✓
Answer
- Magnesium
Explanation:
Magnesium is a constituent of chlorophyll. Chlorophylls are the green photosynthetic pigments. Five types of chlorophylls n, h, c, d and e occur in plants. Out of these only chlorophylls a and b occur in the chloroplasts of higher plants. Molecular formula of chlorophyll a, b, c and d are $\text{C}_{55}\text{H}_{72}\text{O}_{5}\text{N}_4\text{Mg},\text{ C}_{54}\text{H}_{70}\text{O}_{6}\text{N}_4\text{Mg}$ and $\text{C}_{54}\text{H}_{70}\text{O}_{6}\text{N}_4\text{Mg}$ respectively. Chlorophyll e is a rare type found in some golden algae.
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