Biology A-Level
competitive exclusion
What competitive exclusion means in Biology A-Level, as defined for AQA.
Definition of competitive exclusion
Check what you remember
Read the wording for your board, then hide it and explain competitive exclusion in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Light-demanding pioneers lose the interspecific competition for light, so their population falls and they are excluded from the area.
Topics that use competitive exclusion
- Populations in ecosystems (A-level only) (AQA A-Level)
Related terms
- abiotic components
- abiotic factors
- belt transect
- community
- conflicting human needs
- Conservation
- correlation not causation
- dynamic equilibrium
Using competitive exclusion in the exam
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