26. Magnesium ions are needed by plants to make
- starch
- proteins
- cellulose
- chlorophyll
Answer: D) chlorophyll
Explanation: Magnesium is part of chlorophyll. O Level Biology · Topic 6 Plant Nutrition · 6.3 Mineral nutrition
MCQs / Biology / O Level Biology: Plant Nutrition
O Level Biology: Plant Nutrition MCQs — Biology (page 2)
26 multiple-choice questions on O Level Biology: Plant Nutrition from Biology, each with the correct answer and, where available, a teacher's explanation. Read through them to revise the chapter, then practise the same questions one by one to test yourself.
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