{"id":90660,"date":"2025-06-01T10:33:12","date_gmt":"2025-06-01T10:33:12","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=90660"},"modified":"2025-06-01T10:33:12","modified_gmt":"2025-06-01T10:33:12","slug":"which-of-the-following-factors-are-needed-for-the-growth-of-corals","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-factors-are-needed-for-the-growth-of-corals\/","title":{"rendered":"Which of the following factors are needed for the growth of corals?"},"content":{"rendered":"<p>Which of the following factors are needed for the growth of corals?<\/p>\n<ul>\n<li>Freshwater<\/li>\n<li>Clear shallow salt water<\/li>\n<li>Plenty of sunlight for photo-synthesis<\/li>\n<li>Warm water between 23 \u00b0C and 25 \u00b0C<\/li>\n<\/ul>\n<p>Select the correct answer using the code given below.<\/p>\n<p>[amp_mcq option1=&#8221;1, 3 and 4 only&#8221; option2=&#8221;2, 3 and 4 only&#8221; option3=&#8221;1 and 2 only&#8221; option4=&#8221;1, 2, 3 and 4&#8243; 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 CAPF &#8211; 2021<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-capf-2021.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-capf-2021\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nThe factors needed for the growth of corals are clear shallow salt water, plenty of sunlight for photo-synthesis, and warm water between 23 \u00b0C and 25 \u00b0C.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nCoral reefs thrive in specific marine environments characterized by warm, clear, shallow saltwater and sufficient sunlight to support the symbiotic algae (zooxanthellae) living within the coral tissues.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nLet&#8217;s evaluate each factor:<br \/>\n1.  **Freshwater:** Corals are marine organisms and are highly sensitive to salinity changes. Freshwater input (e.g., from rivers) can be detrimental to coral health. Thus, freshwater is NOT needed.<br \/>\n2.  **Clear shallow salt water:** Corals need saltwater. Shallow water allows sunlight penetration. Clear water is crucial because suspended sediment can block sunlight (harming zooxanthellae) and smother corals. This factor is essential.<br \/>\n3.  **Plenty of sunlight for photo-synthesis:** Most reef-building corals have symbiotic algae (zooxanthellae) living in their tissues. These algae perform photosynthesis and provide the coral with energy. Sufficient sunlight is necessary for this process. This factor is essential.<br \/>\n4.  **Warm water between 23 \u00b0C and 25 \u00b0C:** Corals generally require warm water temperatures, typically between 20\u00b0C and 28\u00b0C. The range 23-25\u00b0C falls well within the optimal temperature zone for many coral species. Sustained temperatures outside this range (too hot or too cold) can cause stress and bleaching. This factor is essential.<br \/>\nTherefore, factors 2, 3, and 4 are needed for the growth of corals.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following factors are needed for the growth of corals? Freshwater Clear shallow salt water Plenty of sunlight for photo-synthesis Warm water between 23 \u00b0C and 25 \u00b0C Select the correct answer using the code given below. [amp_mcq option1=&#8221;1, 3 and 4 only&#8221; option2=&#8221;2, 3 and 4 only&#8221; option3=&#8221;1 and 2 only&#8221; option4=&#8221;1, &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which of the following factors are needed for the growth of corals?\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-factors-are-needed-for-the-growth-of-corals\/#more-90660\">Detailed Solution<span class=\"screen-reader-text\">Which of the following factors are needed for the growth of corals?<\/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":[1085],"tags":[1110,1367,1136],"class_list":["post-90660","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1110","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>Which of the following factors are needed for the growth of corals?<\/title>\n<meta name=\"description\" content=\"The factors needed for the growth of corals are clear shallow salt water, plenty of sunlight for photo-synthesis, and warm water between 23 \u00b0C and 25 \u00b0C. Coral reefs thrive in specific marine environments characterized by warm, clear, shallow saltwater and sufficient sunlight to support the symbiotic algae (zooxanthellae) living within the coral tissues.\" \/>\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-of-the-following-factors-are-needed-for-the-growth-of-corals\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which of the following factors are needed for the growth of corals?\" \/>\n<meta property=\"og:description\" content=\"The factors needed for the growth of corals are clear shallow salt water, plenty of sunlight for photo-synthesis, and warm water between 23 \u00b0C and 25 \u00b0C. Coral reefs thrive in specific marine environments characterized by warm, clear, shallow saltwater and sufficient sunlight to support the symbiotic algae (zooxanthellae) living within the coral tissues.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-factors-are-needed-for-the-growth-of-corals\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:33:12+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 of the following factors are needed for the growth of corals?","description":"The factors needed for the growth of corals are clear shallow salt water, plenty of sunlight for photo-synthesis, and warm water between 23 \u00b0C and 25 \u00b0C. Coral reefs thrive in specific marine environments characterized by warm, clear, shallow saltwater and sufficient sunlight to support the symbiotic algae (zooxanthellae) living within the coral tissues.","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\/which-of-the-following-factors-are-needed-for-the-growth-of-corals\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following factors are needed for the growth of corals?","og_description":"The factors needed for the growth of corals are clear shallow salt water, plenty of sunlight for photo-synthesis, and warm water between 23 \u00b0C and 25 \u00b0C. Coral reefs thrive in specific marine environments characterized by warm, clear, shallow saltwater and sufficient sunlight to support the symbiotic algae (zooxanthellae) living within the coral tissues.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-factors-are-needed-for-the-growth-of-corals\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:33:12+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\/which-of-the-following-factors-are-needed-for-the-growth-of-corals\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-factors-are-needed-for-the-growth-of-corals\/","name":"Which of the following factors are needed for the growth of corals?","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:33:12+00:00","dateModified":"2025-06-01T10:33:12+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The factors needed for the growth of corals are clear shallow salt water, plenty of sunlight for photo-synthesis, and warm water between 23 \u00b0C and 25 \u00b0C. Coral reefs thrive in specific marine environments characterized by warm, clear, shallow saltwater and sufficient sunlight to support the symbiotic algae (zooxanthellae) living within the coral tissues.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-factors-are-needed-for-the-growth-of-corals\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-factors-are-needed-for-the-growth-of-corals\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-factors-are-needed-for-the-growth-of-corals\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CAPF","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-capf\/"},{"@type":"ListItem","position":3,"name":"Which of the following factors are needed for the growth of corals?"}]},{"@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\/90660","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=90660"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/90660\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=90660"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=90660"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=90660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}