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Symbiotic species in Cnidarians, Fungi, Protozoa – UPSC Prelims PYQ 2021Jeevan Bisht2021 / Environment / Environment Basics / UPSC Prelims PYQs
Detritivores (earthworm, millipede, woodlouse) – UPSC Prelims PYQ 2021Jeevan Bisht2021 / Environment / Environment Basics / UPSC Prelims PYQs
Primary producers in ocean food chains — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Environment / Environment Basics / UPSC Prelims PYQs
Organisms surviving on surfaces without soil — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Environment / Environment Basics / UPSC Prelims PYQs
UPSC Prelims PYQ 2018: Sixth mass extinction — cause discussedJeevan Bisht2018 / Ecology / Environment / Environment Basics / UPSC Prelims PYQs
UPSC Prelims PYQ 2018: Leaf modifications in desert areas to reduce water lossJeevan Bisht2018 / Ecology / Environment / Environment Basics / UPSC Prelims PYQs
Definition of ecosystem: UPSC Prelims PYQ 2015Jeevan Bisht2015 / Environment / Environment Basics / UPSC Prelims PYQs
Sequence of a Marine Food Chain — UPSC Prelims PYQ 2014Jeevan Bisht2014 / Environment / Environment Basics / UPSC Prelims PYQs
Sources adding CO2 to carbon cycle UPSC Prelims PYQ 2014Jeevan Bisht2014 / Environment / Environment Basics / UPSC Prelims PYQs
Leaf Modifications in Deserts — UPSC Prelims PYQ 2013Jeevan Bisht2013 / Ecology / Environment / Environment Basics / UPSC Prelims PYQs
Decomposer organisms in food chains – UPSC Prelims PYQ 2013Jeevan Bisht2013 / Environment / Environment Basics / UPSC Prelims PYQs
Ecological niche definition – UPSC Prelims PYQ 2013Jeevan Bisht2013 / Ecology / Environment / Environment Basics / UPSC Prelims PYQs
Food chains in ecosystems — UPSC Prelims PYQ 2013Jeevan Bisht2013 / Environment / Environment Basics / UPSC Prelims PYQs
Sequence of ecosystems by productivity — UPSC Prelims PYQ 2013Jeevan Bisht2013 / Environment / Environment Basics / UPSC Prelims PYQs
Why trees don’t replace grasses in grassland succession — UPSC Prelims PYQ 2013Jeevan Bisht2013 / Environment / Environment Basics / UPSC Prelims PYQs
UPSC Prelims PYQ 2012: consequences of complete phytoplankton lossPMF IAS2012 / Environment / Environment Basics / UPSC Prelims PYQs
UPSC Prelims PYQ 2012: Supporting ecosystem service examplePMF IAS2012 / Environment / Environment Basics / UPSC Prelims PYQs
Rainforest regeneration vs deciduous forest — UPSC Prelims PYQ 2011PMF IAS2011 / Environment / Environment Basics / UPSC Prelims PYQs
Marine upwelling and productivity — UPSC Prelims PYQ 2011PMF IAS2011 / Environment / Environment Basics / UPSC Prelims PYQs
UPSC Prelims PYQ 2010 — Chlorinated hydrocarbon pesticide biomagnificationPMF IAS2010 / Environment / Environment Basics / UPSC Prelims PYQs
DDT biomagnification — UPSC Prelims PYQ 1997PMF IAS1997 / Environment / Environment Basics / UPSC Prelims PYQs
