AIIMS 2019 Botany Species Interactions Assertion Reason Question
Assertion: In commensalism, one organism is benefitted and other is unaffected Reason: Cattle egret bird and cattle is an example of commensalism
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Option A is correct because the assertion accurately describes commensalism, where one organism benefits while the other remains unaffected. The reason provided, the relationship between the cattle egret bird and cattle, exemplifies this concept, as the egret benefits by feeding on insects disturbed by the cattle, while the cattle are not harmed or benefited.
Option B is incorrect because the reason does indeed correctly explain the assertion. Option C is not valid since both the assertion and reason are true. Option D is incorrect as both statements are true, contradicting the assertion that they are false. Understanding commensalism is crucial in ecology, as it highlights the diverse interactions between species in ecosystems.
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