UPSC CIVIL SERVICES PRELIMINARY EXAMINATION
UPSC Prelims 2024— Question 78
Q78
Question
Which one of the following shows a unique relationship with an insect that has coevolved with it and that is the only insect that can pollinate this tree?
AnswerOption A
Explanation
The correct answer is option (A). Fig trees and fig wasps have a highly specialised coevolutionary relationship in which particular wasps pollinate particular fig species. The relationship is a classic example of obligate mutualism. Mahua, sandalwood and silk cotton do not fit the unique pollinator relationship described. The key to this question is to distinguish the exact constitutional provision, factual association, scientific principle, or current-affairs detail being tested from statements that are partly true but incomplete or incorrectly framed. UPSC often makes the distractors plausible by changing one institutional role, date, classification, geographic association, or causal relationship. Option A — “Fig” is correct. It matches the established fact described above and gives the complete combination or identification required by the question. Option B — “Mahua” is incorrect. It does not match the established fact or contains the incorrect combination, institution, relationship, classification, or proposition identified in the explanation above. Choosing it would therefore introduce a factual error or omit a necessary element. Option C — “Sandalwood” is incorrect. It does not match the established fact or contains the incorrect combination, institution, relationship, classification, or proposition identified in the explanation above. Choosing it would therefore introduce a factual error or omit a necessary element. Option D — “Silk cotton” is incorrect. It does not match the established fact or contains the incorrect combination, institution, relationship, classification, or proposition identified in the explanation above. Choosing it would therefore introduce a factual error or omit a necessary element. For examination purposes, the safest approach is to verify each statement independently before looking at the answer-code combination. This is particularly important in statement-based questions, because one false clause makes an entire combination wrong. In factual questions, compare the defining characteristic asked in the stem with each alternative rather than relying on superficial familiarity. The answer recorded here follows the verified Set C key used for this database.
Question Classification
SubjectEnvironment & Ecology
TopicEcology
SubtopicEcosystem
Question TypeDirect factual / conceptual
Difficultydifficult
VerificationVerified