Chirkut.বাংলা

MCQ practice · SSC Biology Board questions · Chapter 5: Food, Nutrition and Digestion

Dhaka Board 2023 Jashore Board 2023

Which are the main components of chlorophyll?

Think it through first, then pick an option.

  1. a Mg and N
  2. b Fe and N
  3. c K and N
  4. d Cl and N
Answer and explanation

Correct answer: a Mg and N

Magnesium is an important part of the chlorophyll molecule and nitrogen is essential to chlorophyll. Iron helps form chlorophyll but is not a part of the molecule.

Why the other options are wrong

  • b Fe and N: “Fe and N” does not fit here. Magnesium is an important part of the chlorophyll molecule and nitrogen is essential to chlorophyll. Iron helps form chlorophyll but is not a part of the molecule.
  • c K and N: “K and N” does not fit here. Magnesium is an important part of the chlorophyll molecule and nitrogen is essential to chlorophyll. Iron helps form chlorophyll but is not a part of the molecule.
  • d Cl and N: “Cl and N” does not fit here. Magnesium is an important part of the chlorophyll molecule and nitrogen is essential to chlorophyll. Iron helps form chlorophyll but is not a part of the molecule.