Same chapter3 marksDifficulty: Medium
What are the three ways in which an organism can respond to a stressful environment? Give an example of each.
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3 marksDifficulty: Medium
Explain Gause's competitive exclusion principle and one way in which species avoid it.
Original Khojo Papers practice question — not from a past board paper.
Answer
The principle states that two species competing for the same limited resource cannot coexist indefinitely, and the inferior competitor will be eliminated. Species avoid it by resource partitioning, using the resource at different times or in different parts of the habitat, as MacArthur's warblers do by feeding in different zones of the same tree.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Competitive release, when a species expands after its competitor is removed, is the evidence for the principle.
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