O-LevelBiologyPlant Nutrition5090/12 · May/June 2021 · Q71 Mark

A lack of certain mineral ions affects the growth of young plants. Which effects are caused by a lack of magnesium ions and a lack of nitrate ions? lack of magnesium ions lack of nitrate ions

Athe leaves become dark green overall growth is stunted

Bthe leaves go yellow in patches the plant is unable to form proteins

Cthe plant is unable to form enzymes the plant is unable to form starch

Dthe plant is unable to form root hairs the leaves become bright green

✓ Correct answer

B: the leaves go yellow in patches the plant is unable to form proteins

Oracle Prep sorts past-paper questions by topic, so you can drill Plant Nutrition and see which topics are most likely to come up next.

Topic: Plant Nutrition, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2021 Paper 1 Variant 2, question 7.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content