{"id":86444,"date":"2025-06-01T03:47:04","date_gmt":"2025-06-01T03:47:04","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86444"},"modified":"2025-06-01T03:47:04","modified_gmt":"2025-06-01T03:47:04","slug":"energy-and-nutrients-flow-from-one-trophic-level-to-another-in-an-ecos","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/energy-and-nutrients-flow-from-one-trophic-level-to-another-in-an-ecos\/","title":{"rendered":"Energy and nutrients flow from one trophic level to another in an ecos"},"content":{"rendered":"<p>Energy and nutrients flow from one trophic level to another in an ecosystem. Which one of the following statements correctly describes the direction of flow of energy and nutrients in an ecosystem ?<\/p>\n<p>[amp_mcq option1=&#8221;Energy flow is cyclic and nutrient flow is unidirectional.&#8221; option2=&#8221;Energy flow is unidirectional and nutrient flow is cyclic.&#8221; option3=&#8221;Both energy and nutrient flow are unidirectional.&#8221; option4=&#8221;Both energy and nutrient flow are cyclic.&#8221; correct=&#8221;option2&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC CDS-2 &#8211; 2023<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-cds-2-2023.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-cds-2-2023\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nIn an ecosystem, energy flows in a unidirectional manner, while nutrients follow a cyclic path.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nEnergy enters an ecosystem primarily from the sun (for producers) and is transferred from one trophic level to the next (producers to consumers, etc.). At each transfer, a significant amount of energy is lost as heat, and this energy cannot be reused by organisms in lower trophic levels. Therefore, energy flow is unidirectional and non-cyclic. Nutrients, such as carbon, nitrogen, phosphorus, etc., are continuously cycled within the ecosystem, moving from the environment to organisms and back to the environment through processes like decomposition.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nBiogeochemical cycles describe the pathways of nutrient circulation through the lithosphere, hydrosphere, atmosphere, and biosphere. These cycles ensure that nutrients are available for life to continue.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Energy and nutrients flow from one trophic level to another in an ecosystem. Which one of the following statements correctly describes the direction of flow of energy and nutrients in an ecosystem ? [amp_mcq option1=&#8221;Energy flow is cyclic and nutrient flow is unidirectional.&#8221; option2=&#8221;Energy flow is unidirectional and nutrient flow is cyclic.&#8221; option3=&#8221;Both energy and &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Energy and nutrients flow from one trophic level to another in an ecos\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/energy-and-nutrients-flow-from-one-trophic-level-to-another-in-an-ecos\/#more-86444\">Detailed Solution<span class=\"screen-reader-text\">Energy and nutrients flow from one trophic level to another in an ecos<\/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":[1088],"tags":[1105,1367,1136],"class_list":["post-86444","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1105","tag-ecology","tag-environment-and-ecology","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Energy and nutrients flow from one trophic level to another in an ecos<\/title>\n<meta name=\"description\" content=\"In an ecosystem, energy flows in a unidirectional manner, while nutrients follow a cyclic path. Energy enters an ecosystem primarily from the sun (for producers) and is transferred from one trophic level to the next (producers to consumers, etc.). At each transfer, a significant amount of energy is lost as heat, and this energy cannot be reused by organisms in lower trophic levels. Therefore, energy flow is unidirectional and non-cyclic. Nutrients, such as carbon, nitrogen, phosphorus, etc., are continuously cycled within the ecosystem, moving from the environment to organisms and back to the environment through processes like decomposition.\" \/>\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\/energy-and-nutrients-flow-from-one-trophic-level-to-another-in-an-ecos\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Energy and nutrients flow from one trophic level to another in an ecos\" \/>\n<meta property=\"og:description\" content=\"In an ecosystem, energy flows in a unidirectional manner, while nutrients follow a cyclic path. Energy enters an ecosystem primarily from the sun (for producers) and is transferred from one trophic level to the next (producers to consumers, etc.). At each transfer, a significant amount of energy is lost as heat, and this energy cannot be reused by organisms in lower trophic levels. Therefore, energy flow is unidirectional and non-cyclic. Nutrients, such as carbon, nitrogen, phosphorus, etc., are continuously cycled within the ecosystem, moving from the environment to organisms and back to the environment through processes like decomposition.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/energy-and-nutrients-flow-from-one-trophic-level-to-another-in-an-ecos\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T03:47:04+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":"Energy and nutrients flow from one trophic level to another in an ecos","description":"In an ecosystem, energy flows in a unidirectional manner, while nutrients follow a cyclic path. Energy enters an ecosystem primarily from the sun (for producers) and is transferred from one trophic level to the next (producers to consumers, etc.). At each transfer, a significant amount of energy is lost as heat, and this energy cannot be reused by organisms in lower trophic levels. Therefore, energy flow is unidirectional and non-cyclic. Nutrients, such as carbon, nitrogen, phosphorus, etc., are continuously cycled within the ecosystem, moving from the environment to organisms and back to the environment through processes like decomposition.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/energy-and-nutrients-flow-from-one-trophic-level-to-another-in-an-ecos\/","og_locale":"en_US","og_type":"article","og_title":"Energy and nutrients flow from one trophic level to another in an ecos","og_description":"In an ecosystem, energy flows in a unidirectional manner, while nutrients follow a cyclic path. Energy enters an ecosystem primarily from the sun (for producers) and is transferred from one trophic level to the next (producers to consumers, etc.). At each transfer, a significant amount of energy is lost as heat, and this energy cannot be reused by organisms in lower trophic levels. Therefore, energy flow is unidirectional and non-cyclic. Nutrients, such as carbon, nitrogen, phosphorus, etc., are continuously cycled within the ecosystem, moving from the environment to organisms and back to the environment through processes like decomposition.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/energy-and-nutrients-flow-from-one-trophic-level-to-another-in-an-ecos\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T03:47:04+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/energy-and-nutrients-flow-from-one-trophic-level-to-another-in-an-ecos\/","url":"https:\/\/exam.pscnotes.com\/mcq\/energy-and-nutrients-flow-from-one-trophic-level-to-another-in-an-ecos\/","name":"Energy and nutrients flow from one trophic level to another in an ecos","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T03:47:04+00:00","dateModified":"2025-06-01T03:47:04+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"In an ecosystem, energy flows in a unidirectional manner, while nutrients follow a cyclic path. Energy enters an ecosystem primarily from the sun (for producers) and is transferred from one trophic level to the next (producers to consumers, etc.). At each transfer, a significant amount of energy is lost as heat, and this energy cannot be reused by organisms in lower trophic levels. Therefore, energy flow is unidirectional and non-cyclic. 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