O-LevelBiologyCoordination & Response5090/11 · May/June 2023 · Q281 Mark

Auxin is a chemical produced by plants. What is the role of auxin?

AIt stimulates cells in the plant shoot to elongate.

BIt stimulates meiotic cell division.

CIt stimulates the development of a branching root system.

DIt stimulates the process of seed germination.

✓ Correct answer

A: It stimulates cells in the plant shoot to elongate.

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Topic: Coordination & Response, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2023 Paper 1 Variant 1, question 28.

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