O-LevelBiologyPlant Nutrition5090/11 · Oct/Nov 2014 · Q61 Mark

What are the effects of a lack of magnesium ions and nitrate ions on plant growth?

Alack of magnesium ions: leaves go yellow between the veins, lack of nitrate ions: unable to form enzymes

Black of magnesium ions: roots lack root hairs, lack of nitrate ions: overall growth stunted

Clack of magnesium ions: unable to form amino acids, lack of nitrate ions: unable to form glucose

Dlack of magnesium ions: unable to form cellulose, lack of nitrate ions: oldest leaves go yellow

✓ Correct answer

A: lack of magnesium ions: leaves go yellow between the veins, lack of nitrate ions: unable to form enzymes

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Topic: Plant Nutrition, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2014 Paper 1 Variant 1, question 6.

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