What is free nitrogen?
A nitrogen
that is ready for plants to use
B nitrogen that has been fixed by bacteria
C nitrogen that cannot be used by organisms
D nitrogen that is returned to the soil by decomposers<\/p>\n\n\n\n
The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n The correct answer is A: nitrogen that is ready for plants to use<\/strong>.<\/p>\n\n\n\n Explanation:<\/strong><\/p>\n\n\n\n Nitrogen is a vital nutrient for all living organisms, playing a crucial role in the formation of proteins, nucleic acids (DNA and RNA), and other important biological molecules. However, atmospheric nitrogen (N\u2082) constitutes about 78% of the Earth’s atmosphere, and it exists in a form that is largely inert and not directly usable by most plants and animals. This is where the concept of “free nitrogen” comes into play.<\/p>\n\n\n\n Free nitrogen refers to nitrogen that has been converted into forms that can be utilized by plants. The most common form of nitrogen available to plants is nitrate (NO\u2083\u207b) or ammonium (NH\u2084\u207a). For nitrogen to be “free” or available for uptake by plants, it typically undergoes a process known as nitrogen fixation. This process can occur through biological means, where certain bacteria in the soil or root nodules of legumes convert atmospheric nitrogen into ammonia, which can then be further processed into nitrates.<\/p>\n\n\n\n In addition to biological fixation, nitrogen can also be made available to plants through the decomposition of organic matter. When decomposers break down dead plants and animals, they release nitrogen in a form that plants can absorb. Thus, while free nitrogen can encompass both forms of nitrogen that have been fixed by bacteria and those returned to the soil by decomposers, it is specifically associated with the nitrogen that is readily available for plant uptake.<\/p>\n\n\n\n In summary, free nitrogen is crucial for plant growth and development as it provides the necessary nutrients for synthesizing vital compounds. Understanding nitrogen availability helps in managing soil fertility and promoting healthy ecosystems.<\/p>\n","protected":false},"excerpt":{"rendered":" What is free nitrogen?A nitrogenthat is ready for plants to useB nitrogen that has been fixed by bacteriaC nitrogen that cannot be used by organismsD nitrogen that is returned to the soil by decomposers The Correct Answer and Explanation is : The correct answer is A: nitrogen that is ready for plants to use. Explanation: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","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":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"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":""},"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":[25],"tags":[],"class_list":["post-151787","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/151787","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=151787"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/151787\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=151787"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=151787"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=151787"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}