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UPSC 2022: Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide?
(a)Cotton
(b)Rice
(c)Sugarcane
(d)Wheat
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Not attemptedCorrect Answer: (b) Rice
Flooded paddy-rice fields create anaerobic conditions that favour methanogenic archaea and also generate nitrous oxide during nitrification–denitrification cycles; IPCC and FAO studies identify rice cultivation as the largest cropland source of both CH₄ and N₂O, far exceeding crops such as cotton, sugarcane or wheat. Hence, rice (धान) is the most important anthropogenic source among the options. ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC8244889/?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2022 Environment & Ecology question?▼
The correct answer is option (b): Rice. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Climate Change & Greenhouse Gases question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2022, GS Paper 1, as Question 21. It falls under Environment & Ecology > Climate Change & Greenhouse Gases.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Climate Change & Greenhouse Gases?▼
UPSC has asked 34 questions from Climate Change & Greenhouse Gases (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.