{"id":91067,"date":"2025-06-01T10:45:20","date_gmt":"2025-06-01T10:45:20","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91067"},"modified":"2025-06-01T10:45:20","modified_gmt":"2025-06-01T10:45:20","slug":"which-one-of-the-following-is-the-correct-sequence-of-ecosystems-in-th","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-the-correct-sequence-of-ecosystems-in-th\/","title":{"rendered":"Which one of the following is the correct sequence of ecosystems in th"},"content":{"rendered":"

Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?<\/p>\n

[amp_mcq option1=”Oceans, lakes, grasslands, mangroves” option2=”Mangroves, oceans, grasslands, lakes” option3=”Mangroves, grasslands, lakes, oceans” option4=”Oceans, mangroves, lakes, grasslands” correct=”option3″]<\/p>\n

\n
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This question was previously asked in<\/div>\n
UPSC IAS – 2013<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct answer is C) Mangroves, grasslands, lakes, oceans.
\n<\/section>\n
\nPrimary productivity refers to the rate at which energy is converted by photosynthetic organisms into organic substances. Among the given options, mangrove ecosystems, being highly productive coastal environments rich in nutrients and sunlight, generally exhibit the highest net primary productivity. Grasslands have moderate productivity, varying significantly based on rainfall and soil fertility. Lakes vary widely from oligotrophic (low productivity) to eutrophic (high productivity), but generally have lower average productivity than highly productive terrestrial or coastal systems. Open oceans, especially the vast pelagic zones, are often nutrient-limited and have relatively low average productivity, although coastal upwelling zones can be highly productive.
\n<\/section>\n
\nThe generalized order of decreasing productivity among major ecosystems is often cited as: Tropical rainforests, Swamps and Marshes (including Mangroves), Estuaries > Temperate forests, Cultivated land > Grasslands, Lakes and Streams > Tundra, Open Ocean > Deserts. Comparing the specific options given, mangroves are known for very high productivity, followed by grasslands (moderate), then lakes (variable but often moderate to low), and finally open oceans (generally low). Thus, the sequence of decreasing productivity is typically Mangroves > Grasslands > Lakes > Oceans.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity? [amp_mcq option1=”Oceans, lakes, grasslands, mangroves” option2=”Mangroves, oceans, grasslands, lakes” option3=”Mangroves, grasslands, lakes, oceans” option4=”Oceans, mangroves, lakes, grasslands” correct=”option3″] This question was previously asked in UPSC IAS – 2013 Download PDFAttempt Online The correct answer is C) Mangroves, grasslands, … <\/p>\n

Detailed SolutionWhich one of the following is the correct sequence of ecosystems in th<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1092],"tags":[1467,1367,1136],"class_list":["post-91067","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1467","tag-ecology","tag-environment-and-ecology","no-featured-image-padding"],"yoast_head":"\nWhich one of the following is the correct sequence of ecosystems in th<\/title>\n<meta name=\"description\" content=\"The correct answer is C) Mangroves, grasslands, lakes, oceans. Primary productivity refers to the rate at which energy is converted by photosynthetic organisms into organic substances. Among the given options, mangrove ecosystems, being highly productive coastal environments rich in nutrients and sunlight, generally exhibit the highest net primary productivity. Grasslands have moderate productivity, varying significantly based on rainfall and soil fertility. Lakes vary widely from oligotrophic (low productivity) to eutrophic (high productivity), but generally have lower average productivity than highly productive terrestrial or coastal systems. Open oceans, especially the vast pelagic zones, are often nutrient-limited and have relatively low average productivity, although coastal upwelling zones can be highly productive.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-the-correct-sequence-of-ecosystems-in-th\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following is the correct sequence of ecosystems in th\" \/>\n<meta property=\"og:description\" content=\"The correct answer is C) Mangroves, grasslands, lakes, oceans. Primary productivity refers to the rate at which energy is converted by photosynthetic organisms into organic substances. Among the given options, mangrove ecosystems, being highly productive coastal environments rich in nutrients and sunlight, generally exhibit the highest net primary productivity. Grasslands have moderate productivity, varying significantly based on rainfall and soil fertility. Lakes vary widely from oligotrophic (low productivity) to eutrophic (high productivity), but generally have lower average productivity than highly productive terrestrial or coastal systems. Open oceans, especially the vast pelagic zones, are often nutrient-limited and have relatively low average productivity, although coastal upwelling zones can be highly productive.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-the-correct-sequence-of-ecosystems-in-th\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:45:20+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which one of the following is the correct sequence of ecosystems in th","description":"The correct answer is C) Mangroves, grasslands, lakes, oceans. 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