Question:

The principle of competitive exclusion was stated by

Updated On: Apr 20, 2025
  • C. Darwin
  • G. F. Gause
  • MacArthur
  • Verhulst & Pearl
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The Correct Option is B

Solution and Explanation

Gause’s Competitive Exclusion Principle 

Two or more species with closely similar niche requirements cannot exist indefinitely in the same area, as sooner or later they will come into competition for possession of it. This is known as Gause’s competitive exclusion principle.

The principle states that an ecological niche cannot be simultaneously and completely occupied by established populations of more than one species. Essentially, two species can live in the same habitat, but they cannot occupy the exact same niche.

The more similar the two niches are, the more severe the competition becomes.

Key Points of Gause's Competitive Exclusion Principle:

  • Species with similar ecological requirements cannot coexist indefinitely in the same area.
  • Each species has a unique ecological niche that it occupies.
  • If two species attempt to occupy the same niche, competition will lead to one species being excluded or eliminated.
  • More similar niches lead to more severe competition.
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