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Topic Ecosystem services
Asked 3 times in CSE over 15 years (2011–2026), peaking in 2026.
Key insights
- Most tested in CSE — 3 of 3 PYQs
- Most asked in 2026
- Recurs across 2 years (2011–2026)
Across exams
CSE · 3How the concept evolved
Rising — more than half its appearances (2 of 3) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CSE2026
Which of the following best explain(s) the rationale for protecting mangrove ecosystems in the context of climate resilience?
- Mangroves reduce tidal energy and store freshwater, making them ideal sites for paddy cultivation in saline estuarine belts
- Their salt-sensitive roots filter seawater, making mangroves key to converting coastal land into freshwater aquaculture zones
- By withstanding tidal surges and offering biomass resources, mangroves function both as natural bio-shields and livelihood bases for rural communities
- A 1 only
- B 1 and 2
- C 2 and 3
- D 3 only ✓
✓ Correct answer: (D)
Environment & Ecology › Ecology & Ecosystems
CSE2026
Which of the following statements in relation to NIRANTAR (National Institute for Research and Application of Natural Resources to Transform, Adapt and Build Resilience), a platform of institutions under the Ministry of Environment, Forest and Climate Change, is/are correct?
- Ecosystem Survey and Analysis is a vertical under this platform, the lead institute of which is Botanical Survey of India, Kolkata
- Research and Management of Ecosystem Service is a vertical under this platform, the lead institute of which is Central Zoo Authority, New Delhi
- Capacity Development Support is a vertical under this platform, the lead institute of which is Indian Institute of Forest Management, Bhopal
- A 1, 2 and 3
- B 1 and 3 only ✓
- C 2 only
- D 3 only
✓ Correct answer: (B)
Environment & Ecology › Environmental Governance & Law
CSE2011
Biodiversity forms the basis for human existence in the following ways
- Soil formation
- Prevention of soil erosion
- Recycling of waste
- Pollination of crops
Select the correct answer using the codes given below:
- A 1, 2 and 3 only
- B 2, 3 and 4 only
- C 1 and 4 only
- D 1, 2, 3 and 4 ✓
✓ Correct answer: (D)
Environment & Ecology › Biodiversity & Conservation
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