{"id":5277,"date":"2025-11-21T16:04:15","date_gmt":"2025-11-21T16:04:15","guid":{"rendered":"https:\/\/mehnatt.com\/?p=5277"},"modified":"2025-11-21T16:04:15","modified_gmt":"2025-11-21T16:04:15","slug":"mcqs-based-on-environment-20","status":"publish","type":"post","link":"https:\/\/mehnatt.com\/?p=5277","title":{"rendered":"MCQs Based On Environment &#8211; (20)"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Q1. Which of the following types of corals are responsible for reef building?<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li style=\"font-size:17px\">Soft corals<\/li>\n\n\n\n<li style=\"font-size:17px\">Hard corals<\/li>\n\n\n\n<li style=\"font-size:17px\">Cold water corals<\/li>\n\n\n\n<li style=\"font-size:17px\">Zooxanthellae<\/li>\n<\/ol>\n\n\n\n<button class=\"acc\">View Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"padding-top:5px;color:#27302a;font-size:1.2rem;\"><b>Correct Option:<\/b> 2. Hard corals <br\/>\n<strong>Explanation:<\/strong> Only hard corals (also known as hermatypic corals) secrete calcium carbonate skeletons, which build up over time to form coral reefs. Soft corals like sea fans do not contribute to reef structure.\n\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Q2. Coral polyps share a symbiotic relationship with which of the following?<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li style=\"font-size:17px\">Bacteria<\/li>\n\n\n\n<li style=\"font-size:17px\">Diatoms<\/li>\n\n\n\n<li style=\"font-size:17px\">Zooxanthellae<\/li>\n\n\n\n<li style=\"font-size:17px\">Sea grass<\/li>\n<\/ol>\n\n\n\n<button class=\"acc\">View Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"padding-top:5px;color:#27302a;font-size:1.2rem;\"><b>Correct Option:<\/b> 3. Zooxanthellae <br\/>\n<strong>Explanation:<\/strong> Coral polyps live in symbiosis with zooxanthellae, microscopic algae that live within their tissues. The algae provide energy to the corals via photosynthesis, while corals provide a safe habitat and CO\u2082 for the algae.\n\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Q3. Coral reefs are commonly referred to as:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li style=\"font-size:17px\">Deserts of the sea<\/li>\n\n\n\n<li style=\"font-size:17px\">Ocean&#8217;s lungs<\/li>\n\n\n\n<li style=\"font-size:17px\">Tropical Rainforests of the Oceans<\/li>\n\n\n\n<li style=\"font-size:17px\">Grasslands of the ocean<\/li>\n<\/ol>\n\n\n\n<button class=\"acc\">View Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"padding-top:5px;color:#27302a;font-size:1.2rem;\"><b>Correct Option:<\/b> 3. Tropical Rainforests of the Oceans <br\/>\n<strong>Explanation:<\/strong> Due to their high biodiversity and complex ecosystems, coral reefs are often referred to as the &#8220;Tropical Rainforests of the Oceans.&#8221;\n\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Q4. Which of the following reef types is circular and surrounds a lagoon?<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li style=\"font-size:17px\">Patch reef<\/li>\n\n\n\n<li style=\"font-size:17px\">Fringing reef<\/li>\n\n\n\n<li style=\"font-size:17px\">Barrier reef<\/li>\n\n\n\n<li style=\"font-size:17px\">Atoll<\/li>\n<\/ol>\n\n\n\n<button class=\"acc\">View Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"padding-top:5px;color:#27302a;font-size:1.2rem;\"><b>Correct Option:<\/b> 4. Atoll <br\/>\n<strong>Explanation:<\/strong> An atoll is a circular or semi-circular reef that forms around a lagoon, usually over a subsiding seafloor where the coral growth keeps pace with the sinking.\n\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Q5. Coral bleaching is primarily caused by:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li style=\"font-size:17px\">Elevated sea temperatures<\/li>\n\n\n\n<li style=\"font-size:17px\">Increase in fish population<\/li>\n\n\n\n<li style=\"font-size:17px\">Excess sedimentation<\/li>\n\n\n\n<li style=\"font-size:17px\">High ocean salinity<\/li>\n<\/ol>\n\n\n\n<button class=\"acc\">View Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"padding-top:5px;color:#27302a;font-size:1.2rem;\"><b>Correct Option:<\/b> 1. Elevated sea temperatures <br\/>\n<strong>Explanation:<\/strong> The primary cause of coral bleaching is high sea surface temperatures. When water is too warm, corals expel their zooxanthellae, leading to loss of color and energy.\n\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>Q1. Which of the following types of corals are responsible for reef building? View Answer Correct Option: 2. Hard corals Explanation: Only hard corals (also known as hermatypic corals) secrete calcium carbonate skeletons, which build up over time to form coral reefs. Soft corals like sea fans do not contribute to reef structure. Q2. Coral [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[19],"tags":[16,21,87,83,85,82,86,31,15,20,14,84],"class_list":["post-5277","post","type-post","status-publish","format-standard","hentry","category-environment","tag-bank","tag-competitive-exams","tag-coral-bleaching","tag-coral-polyps","tag-coral-reefs","tag-corals","tag-lagoon","tag-mcq","tag-rrb","tag-ssc-cgl","tag-ssc-competitive-exams","tag-symbiotic-relationship"],"_links":{"self":[{"href":"https:\/\/mehnatt.com\/index.php?rest_route=\/wp\/v2\/posts\/5277","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mehnatt.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mehnatt.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mehnatt.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mehnatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5277"}],"version-history":[{"count":7,"href":"https:\/\/mehnatt.com\/index.php?rest_route=\/wp\/v2\/posts\/5277\/revisions"}],"predecessor-version":[{"id":5284,"href":"https:\/\/mehnatt.com\/index.php?rest_route=\/wp\/v2\/posts\/5277\/revisions\/5284"}],"wp:attachment":[{"href":"https:\/\/mehnatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5277"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mehnatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5277"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mehnatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}