IB Biology SL C4.1.18 Allelopathy and Antibiotics Questions

IB Biology SL C4.1.18 covers allelopathy: chemicals released by plants that inhibit competitor germination or growth, and microbial allelochemicals such as penicillin from Penicillium. The available SL question asks you to identify allelopathy from an Ailanthus altissima–ailanthone example.

Exam points

Identify allelopathy in a plant example by linking a named growth-inhibiting chemical with inhibited growth of other plants.

[Maximum number: 1]

The paradise tree (Ailanthus altissima) produces a chemical called ailanthone which inhibits the growth of other plants. What is this process?

Allelopathy

Endemism

Mutualism

Herbivory

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IB Biology SL C4.1.18 Allelopathy and Antibiotics Questions question 1