JAMB Biology 2020 Objective — Question 28

Question 28 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2020 Objective paper, with the correct answer and a full explanation.

The elements required for chlorophyll formation are

A. magnesium, iron and nitrogenCorrect
B. potassium and nitrogen
C. magnesium and calcium
D. None of the above

Explanation

The elements required for chlorophyll formation are magnesium, iron and nitrogen. Thus, yellowing of leaves (chlorosis) is a symptom of the deficiency of any of those elements.

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