Biodiversity and Conservation
25 UPSC CSE (Prelims) Environment and Ecology previous year questions (PYQs) from 8 papers, 2017 to 2026, with answers and worked solutions.
About this chapter
- Difficulty: 2 easy · 19 moderate · 4 hard.
- Most-asked subtopics: National Parks and Wildlife Sanctuaries (10), Species Conservation Programmes (5), Wetlands and Ramsar Sites (3).
- Updated 29 August 2026.
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#1ModerateThreatened Species and IUCN Status
#2ModerateSpecies Conservation Programmes
#3ModerateNational Parks and Wildlife Sanctuaries
#4ModerateNational Parks and Wildlife Sanctuaries
#5ModerateSpecies Conservation Programmes
#6EasyNational Parks and Wildlife Sanctuaries
#7ModerateSpecies Conservation Programmes
#8EasyNational Parks and Wildlife Sanctuaries
#9ModerateNational Parks and Wildlife Sanctuaries
#10HardBiosphere Reserves and Community Reserves
#11ModerateWetlands and Ramsar Sites
#12ModerateBiodiversity Concepts and Hotspots
#13ModerateInvasive Alien Species
#14ModerateNational Parks and Wildlife Sanctuaries
#15HardNational Parks and Wildlife Sanctuaries
#16ModerateNational Parks and Wildlife Sanctuaries
#17HardNational Parks and Wildlife Sanctuaries
#18ModerateNational Parks and Wildlife Sanctuaries
#19HardSpecies Conservation Programmes
#20ModerateThreatened Species and IUCN Status
#21ModerateBiosphere Reserves and Community Reserves
#22ModerateWetlands and Ramsar Sites
#23ModerateWetlands and Ramsar Sites
#24ModerateSpecies Conservation Programmes
#25ModerateThreatened Species and IUCN Status