{"id":132762,"date":"2022-03-03T23:43:39","date_gmt":"2022-03-03T18:13:39","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=132762"},"modified":"2024-07-11T12:12:55","modified_gmt":"2024-07-11T06:42:55","slug":"nitrogen-cycle-2","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/class-9\/evs\/natural-resources\/nitrogen-cycle\/","title":{"rendered":"Nitrogen cycle"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_37 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' style='display:block'><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/infinitylearn.com\/surge\/class-9\/evs\/natural-resources\/nitrogen-cycle\/#Why_is_Nitrogen_important\" title=\"Why is Nitrogen important?\">Why is Nitrogen important?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/infinitylearn.com\/surge\/class-9\/evs\/natural-resources\/nitrogen-cycle\/#What_is_Nitrogen_fixation\" title=\"What is Nitrogen fixation?\">What is Nitrogen fixation?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/infinitylearn.com\/surge\/class-9\/evs\/natural-resources\/nitrogen-cycle\/#What_is_the_Nitrogen_cycle\" title=\"What is the Nitrogen cycle?\">What is the Nitrogen cycle?<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>Table of Contents<\/strong><\/p>\n<ul>\n<li>Importance of Nitrogen<\/li>\n<li>Nitrogen Fixation<\/li>\n<li>Nitrogen Cycle<\/li>\n<li>Summary<\/li>\n<li>What\u2019s Next?<\/li>\n<\/ul>\n<p>In the previous segment of the chapter \u2018Natural Resources,\u2019 we learned about the first biogeochemical cycle, <strong>water cycle<\/strong>. In this segment, let us get ourselves introduced to the second biogeochemical cycle, nitrogen cycle.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_is_Nitrogen_important\"><\/span>Why is Nitrogen important?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>It is an essential nutrient for all life-forms.<\/li>\n<li>It is a part of many molecules essential to life, like proteins, nucleic acids (DNA and RNA) and some vitamins.<\/li>\n<li>It is found in other biologically important compounds such as alkaloids and urea.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Nitrogen_fixation\"><\/span>What is Nitrogen fixation?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The nitrogen molecules of the atmosphere are in their elemental form and do not easily react with other chemicals to form new compounds. Our body, and the bodies of other plants and animals, have no good way to convert nitrogen into a usable form. Hence, they cannot be directly used by the living organisms and need to be broken down into simpler forms. This is done by bacteria that convert atmospheric nitrogen into biologically usable forms in a process called <strong>nitrogen fixation<\/strong>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_the_Nitrogen_cycle\"><\/span>What is the Nitrogen cycle?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The nitrogen cycle is the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Biogeochemical_cycle\">biogeochemical cycle<\/a> by which <a href=\"https:\/\/en.wikipedia.org\/wiki\/Nitrogen\">nitrogen<\/a> is converted into multiple chemical forms as it circulates in the Earth-atmosphere system.<\/p>\n<p>Some species of nitrogen-fixing bacteria are free-living and some are associated with dicot plant species while some of them are also found in the roots of legumes. They have an amazing ability to convert the elemental nitrogen present in the air into nitrates and nitrites. This broken-down form of nitrogen is easily assimilated by the plants. Plants then convert these into several other forms like amino acids which help them to form proteins. When animals eat these plants these molecules are further converted into complex molecules and when the animals die, all these go<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Table of Contents Importance of Nitrogen Nitrogen Fixation Nitrogen Cycle Summary What\u2019s Next? In the previous segment of the chapter [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"Nitrogen cycle","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"Nitrogen cycle | Class 9 EVS Natural Resources","custom_permalink":"class-9\/evs\/natural-resources\/nitrogen-cycle\/"},"categories":[6],"tags":[],"table_tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nitrogen cycle - Infinity Learn by Sri Chaitanya<\/title>\n<meta name=\"description\" content=\"Nitrogen cycle | Class 9 EVS Natural Resources\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/infinitylearn.com\/surge\/class-9\/evs\/natural-resources\/nitrogen-cycle\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nitrogen cycle - 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