Environment topic analysis
Ecology & Ecosystems UPSC PYQs
This collection focuses on ecological interactions, food chains, cycles, adaptations, ecosystem function, biomes, and the roles organisms play within them. This live collection contains 12 classified questions across 6 exam years, from 2014 to 2025.
Year-by-year frequency
Counts show how many questions in this library were assigned to the category in each represented exam year. A zero is not implied for omitted years, and frequency alone is not a prediction of a future paper.
Source topic labels in this cluster
Recurrent concept labels
Representative solved questions
The sample prioritizes different years and removes repeated prompt text. Open a question to see its options, independent answer, and explanation.
UPSC 2025 · Environment
With reference to the planet Earth, consider the following statements : I. Rain forests produce more oxygen than that produced by oceans. II. Marine phytoplankton and photosyn...
UPSC 2024 · Environment
One of the following regions has the world's largest tropical peatland, which holds about three years worth of global carbon emissions from fossil fuels; and the possible dest...
UPSC 2021 · Environment
In case of which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrient to enter the cycle?
UPSC 2017 · Environment
Due to some reasons, if there is a huge fall in the population of species of butterflies, what could be its likely consequence/consequences ? 1. Pollination of some plants cou...
UPSC 2015 · Environment
Which one of the following is the best description of the term 'ecosystem'?
UPSC 2014 · Environment
Which one of the following is the correct sequence of a food chain?
UPSC 2024 · Environment
With reference to the planet Earth, consider the following statements : 1. Rain forests produce more oxygen than that produced by oceans. 2. Marine phytoplankton and photo-syn...
UPSC 2021 · Environment
Which of the following are detritivores? 1. Earthworms 2. Jellyfish 3. Millipedes 4. Seahorses 5. Woodlice Select the correct answer using the code given below.
UPSC 2021 · Environment
The vegetation of savannah consists of grassland with scattered small trees, but extensive areas have no trees. The forest development in such areas is generally kept in check...
UPSC 2014 · Environment
Every year, a monthlong ecologically important campaign/festival is held during which certain communities/tribes plant saplings of fruit-bearing trees. Which of the following...
How this page is built
Topic and concept labels are AI-assisted enrichment, not official UPSC classifications. We map them into a conservative editorial taxonomy using deterministic label rules, publish a category only when it has at least 10 questions across at least three exam years, and keep ambiguous records out of topic pages. Counts update with the question bank. See the full methodology and correction policy.