AIIMS 2014 Botany Ecology MCQ Question
Assertion Removal of keystone species cause serious disruption in the functioning of the community. Reason Keystone species are low in abundance (or biomass) than the dominant species.
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
Correct Answer
Detailed Explanation
The correct answer is B because the assertion that the removal of keystone species causes serious disruption in the community is true; keystone species play a critical role in maintaining the structure and function of their ecosystems. However, the reason provided—stating that keystone species are low in abundance compared to dominant species—does not explain why their removal is so impactful, as their ecological importance is not solely tied to their biomass but rather to their unique roles in the community.
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