{"id":91075,"date":"2025-06-01T10:45:30","date_gmt":"2025-06-01T10:45:30","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91075"},"modified":"2025-06-01T10:45:30","modified_gmt":"2025-06-01T10:45:30","slug":"with-reference-to-food-chains-in-ecosystems-consider-the-following-st","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/","title":{"rendered":"With reference to food chains in ecosystems, consider the following st"},"content":{"rendered":"<p>With reference to food chains in ecosystems, consider the following statements:<\/p>\n<ul>\n<li>1. A food chain illustrates the order in which a chain of organisms feed upon each other.<\/li>\n<li>2. Food chains are found within the populations of a species.<\/li>\n<li>3. A food chain illustrates the numbers of each organism which are eaten by others.<\/li>\n<\/ul>\n<p>Which of the statements given above is\/are correct?<\/p>\n<p>[amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;1 and 2 only&#8221; option3=&#8221;1, 2 and 3&#8243; option4=&#8221;None&#8221; correct=&#8221;option1&#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 IAS &#8211; 2013<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-ias-2013.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-ias-2013\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nStatement 1 is correct. A food chain shows the linear sequence of organisms where nutrients and energy are transferred as one organism eats another. Statements 2 and 3 are incorrect.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nA food chain illustrates the trophic relationships between different species in an ecosystem, showing the flow of energy from producers to consumers of various levels. Food chains involve interactions *between* different species at different trophic levels, not typically *within* the population of a single species (unless referring to cannibalism, which isn&#8217;t the primary representation). While the number of organisms at each level can be represented in an ecological pyramid (like the pyramid of numbers), a simple food chain diagram does not illustrate the *numbers* of organisms eaten.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nEcosystems consist of multiple interconnected food chains, forming a food web. Food chains help understand the flow of energy and the impact of changes in one trophic level on others.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>With reference to food chains in ecosystems, consider the following statements: 1. A food chain illustrates the order in which a chain of organisms feed upon each other. 2. Food chains are found within the populations of a species. 3. A food chain illustrates the numbers of each organism which are eaten by others. Which &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"With reference to food chains in ecosystems, consider the following st\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/#more-91075\">Detailed Solution<span class=\"screen-reader-text\">With reference to food chains in ecosystems, consider the following st<\/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-91075","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":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>With reference to food chains in ecosystems, consider the following st<\/title>\n<meta name=\"description\" content=\"Statement 1 is correct. A food chain shows the linear sequence of organisms where nutrients and energy are transferred as one organism eats another. Statements 2 and 3 are incorrect. A food chain illustrates the trophic relationships between different species in an ecosystem, showing the flow of energy from producers to consumers of various levels. Food chains involve interactions *between* different species at different trophic levels, not typically *within* the population of a single species (unless referring to cannibalism, which isn&#039;t the primary representation). While the number of organisms at each level can be represented in an ecological pyramid (like the pyramid of numbers), a simple food chain diagram does not illustrate the *numbers* of organisms eaten.\" \/>\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\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"With reference to food chains in ecosystems, consider the following st\" \/>\n<meta property=\"og:description\" content=\"Statement 1 is correct. A food chain shows the linear sequence of organisms where nutrients and energy are transferred as one organism eats another. Statements 2 and 3 are incorrect. A food chain illustrates the trophic relationships between different species in an ecosystem, showing the flow of energy from producers to consumers of various levels. Food chains involve interactions *between* different species at different trophic levels, not typically *within* the population of a single species (unless referring to cannibalism, which isn&#039;t the primary representation). While the number of organisms at each level can be represented in an ecological pyramid (like the pyramid of numbers), a simple food chain diagram does not illustrate the *numbers* of organisms eaten.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:45:30+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":"With reference to food chains in ecosystems, consider the following st","description":"Statement 1 is correct. A food chain shows the linear sequence of organisms where nutrients and energy are transferred as one organism eats another. Statements 2 and 3 are incorrect. A food chain illustrates the trophic relationships between different species in an ecosystem, showing the flow of energy from producers to consumers of various levels. Food chains involve interactions *between* different species at different trophic levels, not typically *within* the population of a single species (unless referring to cannibalism, which isn't the primary representation). While the number of organisms at each level can be represented in an ecological pyramid (like the pyramid of numbers), a simple food chain diagram does not illustrate the *numbers* of organisms eaten.","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\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/","og_locale":"en_US","og_type":"article","og_title":"With reference to food chains in ecosystems, consider the following st","og_description":"Statement 1 is correct. A food chain shows the linear sequence of organisms where nutrients and energy are transferred as one organism eats another. Statements 2 and 3 are incorrect. A food chain illustrates the trophic relationships between different species in an ecosystem, showing the flow of energy from producers to consumers of various levels. Food chains involve interactions *between* different species at different trophic levels, not typically *within* the population of a single species (unless referring to cannibalism, which isn't the primary representation). While the number of organisms at each level can be represented in an ecological pyramid (like the pyramid of numbers), a simple food chain diagram does not illustrate the *numbers* of organisms eaten.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:45:30+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\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/","url":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/","name":"With reference to food chains in ecosystems, consider the following st","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:45:30+00:00","dateModified":"2025-06-01T10:45:30+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Statement 1 is correct. A food chain shows the linear sequence of organisms where nutrients and energy are transferred as one organism eats another. Statements 2 and 3 are incorrect. A food chain illustrates the trophic relationships between different species in an ecosystem, showing the flow of energy from producers to consumers of various levels. Food chains involve interactions *between* different species at different trophic levels, not typically *within* the population of a single species (unless referring to cannibalism, which isn't the primary representation). While the number of organisms at each level can be represented in an ecological pyramid (like the pyramid of numbers), a simple food chain diagram does not illustrate the *numbers* of organisms eaten.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/with-reference-to-food-chains-in-ecosystems-consider-the-following-st\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC IAS","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-ias\/"},{"@type":"ListItem","position":3,"name":"With reference to food chains in ecosystems, consider the following st"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/91075","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=91075"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/91075\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=91075"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=91075"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=91075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}