Environment & Ecology · Keystone Species
Which of the following best defines a 'keystone species'?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A species with a small population size nearing extinction
- 2An exotic species introduced to a new biological environment
- 3A species that occupies the highest trophic level of the food chain
- 4A species that has a disproportionately large impact on its ecosystem relative to its abundance✓
Correct answer
A species that has a disproportionately large impact on its ecosystem relative to its abundance
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