Question

Which metal ion is a constituent of chlorophyll?

• A. Iron
• B. Copper
• C. Magnesium
• D. Zinc

Answer 1

The correct option is C Magnesium

Magnesium is a constituent of chlorophyll. Chlorophyll are the green photosynthetic pigments. Five types of cholorophyll a, b, c, d and d and e occur in the chloroplasts of higher plants. Molecular formula of chlorophyll a, b ,c and d are $C_{55}{H}_{72}{O}_5{N}_{4}Mg,$ $C_{55}{H}_{70}{O}_6{N}_{4}Mg,$ $C_{35}{H}_{32}{O}_5{N}_{4}Mg$ and $C_{54}{H}_{70}{O}_6{N}_{4}Mg$ respectively . Chlorophyll e is a rare type found in some golden algae.So, the correct answer is 'Magnesium'.