Home Biology Organisms and Populations Populations Attributes Gause’s competitive exclusion principle stat…
Biology Organisms and Populations Populations Attributes Single Correct MCQ
Published on: August 12, 2026

Gause’s competitive exclusion principle states that

A
Two unrelated species competing for the same resources cannot coexist indefinitely and competitively inferior one will be eliminated eventually.
B
Two closely related species competing for the same resources cannot coexist indefinitely and competitively inferior one will be eliminated eventually
C
Two unrelated species competing for the same resources can coexist indefinitely and can grow together.
D
Two closely related species competing for the same resources can coexist indefinitely and can grow together.

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The correct answer is:
B

Gause’s competitive exclusion principle states that species with very similar ecological niches (often closely related) cannot coexist for long if they compete for the same limiting resources.

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