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UPSC Prelims 2022 Paper-1 📅 05 Jun, 2022

Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide ?

A
(a) Cotton
B
(b) Rice
C
(c) Sugarcane
D
(d) Wheat
Result Summary
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APEDIA

UPSC Prelims
2022 • 05 Jun, 2022 • Paper-1
Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide ?
Correct Answer
(b) Rice
Methane Emission Mechanism: Flooded paddy fields create anaerobic conditions in the soil, which are ideal for methanogenic bacteria to produce large quantities ......
Ref/Book : UPSC Prelims 2022
Ref. Subject Environment
Chapter -
Ref. Topic Climate Change
Pg. No -
💡 Analysis & Explanation
Methane Emission Mechanism ▼
Flooded paddy fields create anaerobic conditions in the soil, which are ideal for methanogenic bacteria to produce large quantities of methane.
Nitrous Oxide Release ▼
The extensive use of nitrogen-based fertilizers in paddy cultivation leads to denitrification processes by soil microbes, releasing significant amounts of nitrous oxide.
Conclusion ▼
Rice cultivation uniquely provides the dual environmental conditions necessary for substantial emissions of both these potent greenhouse gases.
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