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NEETZoologyOrganisms and Populations

What does Gause’s ‘Competitive Exclusion Principle’ state?

Options

  1. ATwo species will always coexist if resources are not limiting
  2. BTwo closely related species competing for the same resources will eventually co-exist
  3. CTwo closely related species cannot coexist indefinitely if competing for the same resources
  4. DResource availability has no effect on species competition

Correct answer

C. Two closely related species cannot coexist indefinitely if competing for the same resources

Step-by-step solution

Gause’s ‘Competitive Exclusion Principle’ states that two closely related species competing for the same resources cannot coexist indefinitely and the competitively inferior one will be eliminated eventually . This may be true if resources are limited, but not otherwise. More recent studies do not support such gross generalizations about competition. While they do not rule out the occurrence of interspecific competition in nature, they point out that species facing competition might evolve mechanisms that promote c

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