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UPSC 2022: 48. 49, Which of the following are nitrogen-fixing plants ? Alfalfa Amaranth Chickpea Clover Purslane (Kulfa) Spinach Select the correct answer using the code given below : "Biorock technology" is talked about in which one of the following situations ? using plant residues exploration/extraction of shale gas areas for forests/protected areas The "Miyawaki method" is well known for the :
(a)Promotion of commercial farming in arid and semi-arid areas
(b)Development of gardens using genetically modified flora
(c)Creation of mini forests in urban areas
(d)Harvesting wind energy on coastal areas and on sea surfaces
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Not attemptedCorrect Answer: (d) Harvesting wind energy on coastal areas and on sea surfaces
Wetlands are compared to ‘Earth’s kidneys’ because their aquatic vegetation filters water, absorbing heavy metals and excess nutrients, thereby detoxifying and purifying the flow—function (d). The other options describe hydrological cycling, food-web support or sediment control, which do not capture the kidney-like filtration role. ([iasuniverse.com](https://www.iasuniverse.com/answers-with-explanation-upsc-prelims-gs1-paper-2022/5/?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 (d): Harvesting wind energy on coastal areas and on sea surfaces. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Water & Wetland Conservation question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2022, GS Paper 1, as Question 43. It falls under Environment & Ecology > Water & Wetland Conservation.
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 Water & Wetland Conservation?▼
UPSC has asked 20 questions from Water & Wetland Conservation (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.