O-LevelBiologyPlant Nutrition5090/11 · May/June 2018 · Q71 Mark

A student grows seedlings in four different test-tubes. Tube W contains all the mineral ions needed for healthy plant growth. The diagram shows the appearance of these seedlings after two weeks. What do tubes X, Y and Z contain?

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Aall minerals except magnesium ions, all minerals except nitrate ions, water

Ball minerals except magnesium ions, water, all minerals except nitrate ions

Call minerals except nitrate ions, all minerals except magnesium ions, water

Dwater, all minerals except magnesium ions, all minerals except nitrate ions

✓ Correct answer

C: all minerals except nitrate ions, all minerals except magnesium ions, water

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Topic: Plant Nutrition, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2018 Paper 1 Variant 1, question 7.

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