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IB Biology SL 4.1.1 Ecological Niche Question Bank

Practise IB Biology SL 4.1.1 by explaining an ecological niche as an organism’s role, resources and way of life within its ecosystem.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Define an ecological niche as an organism’s role, resources and mode of existence.
  • Compare species niches using food, predators, activity time or resource use.

B4.2.1—Ecological niche question 1

[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 B4.2.1—Ecological niche question 1 — IB Biology SL

Other than position in the tree, suggest two ways in which the niches of the warblers in the ecosystem may differ.
1:
2:

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