IB Biology SL 4.1.13 Competitive Exclusion Question Bank

Practise IB Biology SL 4.1.13 by explaining how overlapping niches drive competition and prevent two species from coexisting indefinitely.

Exam points

State competitive exclusion: two species cannot occupy the same niche indefinitely.
Use invasive-species or Paramecium evidence to explain competition and distribution change.

[Maximum number: 2]

12. Ecologists studied the distribution of five species of insectivorous wood warblers of the genus Dendorica living on different parts of coniferous trees in mature forests.

Figure for Question B4.2.13—Competitive exclusion question 1 — IB Biology SL

Outline the principle of competitive exclusion

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B4.2.13—Competitive exclusion question 1