{"id":1126,"date":"2023-06-21T20:51:11","date_gmt":"2023-06-21T15:21:11","guid":{"rendered":"https:\/\/lotusarise.com\/qna\/?p=1126"},"modified":"2024-04-03T07:06:17","modified_gmt":"2024-04-03T01:36:17","slug":"q-which-of-the-following-have-coral-reefs","status":"publish","type":"post","link":"https:\/\/lotusarise.com\/qna\/upsc\/q-which-of-the-following-have-coral-reefs","title":{"rendered":"Q. Which of the following have coral reefs?"},"content":{"rendered":"\n<ol class=\"wp-block-list\" type=\"1\">\n<li>Andaman and Nicobar Islands<\/li>\n\n\n\n<li>Gulf of Kachchh<\/li>\n\n\n\n<li>Gulf of Mannar<\/li>\n\n\n\n<li><strong>Sunderbans<\/strong><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Select the correct answer using the code given below.<\/p>\n\n\n\n<ul class=\"mcq wp-block-list\">\n<li>1, 2 and 3 only<\/li>\n\n\n\n<li>2 and 4 only<\/li>\n\n\n\n<li>1 and 3 only<\/li>\n\n\n\n<li>1, 2, 3 and 4<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Answer: (a) 1, 2 and 3 only<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h6 class=\"wp-block-heading\">Coral Reefs<\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Corals are nothing but&nbsp;<strong>calcareous rocks, formed from the skeletons of minute sea animals, called polyps.<\/strong><\/li>\n\n\n\n<li>The&nbsp;<strong>polyps extract calcium salts from seawater to form hard skeletons<\/strong>&nbsp;which protect their soft bodies. These skeletons give rise to corals.<\/li>\n\n\n\n<li>The corals live in colonies fastened to the rocky seafloor. New generations develop on skeletons of dead polyps. The tubular skeletons grow upwards and outwards as a&nbsp;<strong>cemented calcareous rocky mass collectively called corals.<\/strong><\/li>\n\n\n\n<li>The&nbsp;<strong>shallow rock created by these depositions is called a reef. These reefs, later on, evolve into islands.<\/strong><\/li>\n\n\n\n<li>The corals Occur in different forms and colours, depending upon the nature of salts or constituents they are made of.<\/li>\n\n\n\n<li>The progressive development of corals appears over the sea surface in different forms over a period of time.&nbsp;<strong>Small marine plants (algae) also deposit calcium carbonate, thus contributing to coral growth.<\/strong><\/li>\n\n\n\n<li><strong>Coral reefs in India are found in a lot of areas including the Gulf of Kutch, Gulf of Mannar, Palk Bay, Andaman &amp; Nicobar and Lakshadweep Islands. The Gulf of Kutch in the northwest has some of the most northerly reefs in the world.<\/strong><\/li>\n\n\n\n<li><strong>Patches of coral reefs are also found in Ratnagiri, Malvan and Redi, south Bombay and at the Gaveshani Bank located in the west of Mangalore.<\/strong><\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lotusarise.com\/wp-content\/uploads\/2023\/06\/image-1.png\" alt=\"image 1\" class=\"wp-image-40890\" title=\"\"><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>Ideal conditions for coral growth<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Corals thrive in tropical waters-between 30\u00b0N and 30\u00b0S latitudes.<\/strong><\/li>\n\n\n\n<li>The<strong>&nbsp;ideal depths for coral growth are 45 m to 55 m below sea surface<\/strong>, where there is abundant sunlight available.<\/li>\n\n\n\n<li>The&nbsp;<strong>temperature of water should be around 20\u00b0C.<\/strong><\/li>\n\n\n\n<li><strong>Clear salt water is suitable for coral growth<\/strong>, while&nbsp;<strong>both fresh water and highly saline water are harmful for polyp growth.<\/strong><\/li>\n\n\n\n<li><strong>Adequate supply of oxygen and microscopic marine food, called plankton, is essential for growth and existence<\/strong>. As the food supply is more abundant on the seaward side, corals grow more rapidly on the seaward side.<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lotusarise.com\/wp-content\/uploads\/2023\/06\/Coral-Reefs-in-India-1024x791.png\" alt=\"Coral reefs\" class=\"wp-image-40892\" width=\"713\" height=\"551\" title=\"\"><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>Also Read:&nbsp;<a href=\"https:\/\/lotusarise.com\/coral-reefs-upsc\/\">Coral Reefs &amp; Coral Reefs Bleaching<\/a><\/strong><\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-_bbe14e-61 .kt-block-spacer{height:40px;}.wp-block-kadence-spacer.kt-block-spacer-_bbe14e-61 .kt-divider{border-top-width:2px;border-top-color:#eee;width:100%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-_bbe14e-61\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Select the correct answer using the code given below. Answer: (a) 1, 2 and 3 only Coral Reefs Ideal conditions for coral growth Also Read:&nbsp;Coral Reefs &amp; Coral Reefs Bleaching<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1,3],"tags":[37],"years":[59],"class_list":["post-1126","post","type-post","status-publish","format-standard","hentry","category-upsc","category-prelims","tag-geography","years-59"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"UPSC"},{"value":3,"label":"Prelims"}],"post_tag":[{"value":37,"label":"Geography"}],"years":[{"value":59,"label":"2014"}]},"featured_image_src_large":false,"author_info":{"display_name":"LotusArise","author_link":"https:\/\/lotusarise.com\/qna\/author\/team-lotusarise"},"comment_info":0,"category_info":[{"term_id":1,"name":"UPSC","slug":"upsc","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":1269,"filter":"raw","cat_ID":1,"category_count":1269,"category_description":"","cat_name":"UPSC","category_nicename":"upsc","category_parent":0},{"term_id":3,"name":"Prelims","slug":"prelims","term_group":0,"term_taxonomy_id":3,"taxonomy":"category","description":"","parent":1,"count":1251,"filter":"raw","cat_ID":3,"category_count":1251,"category_description":"","cat_name":"Prelims","category_nicename":"prelims","category_parent":1}],"tag_info":[{"term_id":37,"name":"Geography","slug":"geography","term_group":0,"term_taxonomy_id":37,"taxonomy":"post_tag","description":"","parent":0,"count":167,"filter":"raw"}],"_links":{"self":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/comments?post=1126"}],"version-history":[{"count":1,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1126\/revisions"}],"predecessor-version":[{"id":1136,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1126\/revisions\/1136"}],"wp:attachment":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/media?parent=1126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/categories?post=1126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/tags?post=1126"},{"taxonomy":"years","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/years?post=1126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}