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O-LevelBiologyPlant Nutrition5090/11 · May/June 2021 · Q71 Mark

Plants growing in soil lacking magnesium ions have poor growth. What causes their poor growth?

AThey cannot form cellulose for new cell walls.
BThey cannot form chlorophyll for photosynthesis.
CThey cannot produce amino acids to form proteins.
DThey cannot take in mineral ions from the soil.

✓ Correct answer

B: They cannot form chlorophyll for photosynthesis.

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About this question

Topic
Plant Nutrition, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, May/June 2021 Paper 1 Variant 1, question 7.

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