IB Biology HL B4.2.13 Competitive Exclusion Questions

Explore how niche overlap leads to competition for limiting resources and how Gause’s Paramecium experiments demonstrate competitive exclusion in IB Biology HL B4.2.13.

Exam points

Explain how niche overlap and competition for a shared limiting resource can result in competitive exclusion.
Describe Gause’s Paramecium experiments as evidence that P. aurelia can outcompete P. caudatum in mixed culture.

[Maximum number: 2]

Outline the principle of competitive exclusion.

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IB Biology HL B4.2.13 Competitive Exclusion Questions question 1