Question 10
Photosynthesis and Plant NutritionWhich of the following elements are necessary for the formation of chlorophyll in a plant?
- A.Magnesium and iron
- B.Calcium and potassium
- C.Calcium and sulphur
- D.Potassium and sulphur
- E.Phosphorus and potassium
Show the answer and explanation
Answer: A (Magnesium and iron)
Explanation
Magnesium is part of the chlorophyll molecule, and iron is needed for the plant to make chlorophyll; lack of either causes yellowing (chlorosis).