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Biodiversity and species classification — UPSC Prelims PYQs

45 questions in this bank come from Biodiversity and species classification, spanning UPSC Prelims papers from 2011 to 2026. Every question here carries all four options, the correct answer and a full explanation.

It has appeared in 15 of the last 16 papers, most heavily in 2014 with 6 questions. That makes it one of the most dependable areas in the paper.

The themes examined most often within it are Threats and conservation of biodiversity (6), Classification of living organisms (4), Himalayan biodiversity and ecology (3), Pollinators and their ecological roles (3) and Endemism (2). Those counts are of questions in which the theme is examined, not merely mentioned.

Questions here are spread across Environment & Ecology (35), Science & Technology (5), General Studies (Uncategorized) (2) and Geography (2). Between them they draw on 66 distinct themes, so this is a broader area than a single revision note can cover. That is 3.1% of the 1433 questions in the bank — useful for deciding how much revision time it deserves.

Its weight has held steady, at roughly 3.2 questions a year across the last five papers.

It was not examined in 1 of those papers. Each question below links to its full explanation and to related questions on the same theme from other years, so a weak area can be worked through in one pass rather than hunted for paper by paper.

UPSC Prelims 20263 questions

UPSC Prelims 20251 question

UPSC Prelims 20245 questions

UPSC Prelims 20234 questions

UPSC Prelims 20223 questions

UPSC Prelims 20201 question

UPSC Prelims 20193 questions

UPSC Prelims 20181 question

UPSC Prelims 20171 question

UPSC Prelims 20162 questions

UPSC Prelims 20151 question

UPSC Prelims 20146 questions

UPSC Prelims 20133 questions

UPSC Prelims 20126 questions

UPSC Prelims 20115 questions

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