{"id":204346,"date":"2025-03-21T18:33:16","date_gmt":"2025-03-21T18:33:16","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=204346"},"modified":"2025-03-21T18:33:18","modified_gmt":"2025-03-21T18:33:18","slug":"list-two-functions-of-the-pharynx-in-tunicates","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/21\/list-two-functions-of-the-pharynx-in-tunicates\/","title":{"rendered":"List two functions of the pharynx in tunicates"},"content":{"rendered":"\n<p>List two functions of the pharynx in tunicates.<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Two Functions of the Pharynx in Tunicates:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Filter Feeding<\/strong> \u2013 The pharynx in tunicates plays a crucial role in feeding by filtering plankton and other microscopic particles from the water.<\/li>\n\n\n\n<li><strong>Respiration<\/strong> \u2013 The pharynx also serves as a respiratory organ, facilitating gas exchange by allowing oxygen to diffuse into the bloodstream and carbon dioxide to be expelled.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>Tunicates, also known as sea squirts, are marine invertebrates belonging to the subphylum <strong>Urochordata<\/strong>. They have a specialized structure called the <strong>pharyngeal basket<\/strong>, which is a perforated and ciliated pharynx that performs both feeding and respiration.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Filter Feeding<\/strong><\/h4>\n\n\n\n<p>Tunicates are <strong>suspension feeders<\/strong>, meaning they extract food from water. The pharynx is lined with numerous <strong>gill slits<\/strong> (stigmata) and coated with <strong>mucus<\/strong>, secreted by the endostyle. Water enters through the <strong>incurrent siphon<\/strong> and passes through the pharynx, where food particles become trapped in mucus. Cilia lining the pharynx then transport the mucus with trapped food toward the <strong>esophagus<\/strong>, where it is digested. This adaptation allows tunicates to efficiently extract nutrients from water.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Respiration<\/strong><\/h4>\n\n\n\n<p>The perforations in the pharynx also facilitate respiration. As water flows through the pharyngeal slits, oxygen diffuses into the surrounding blood vessels while carbon dioxide is expelled. The <strong>pharyngeal basket<\/strong> acts similarly to gills in fish, ensuring continuous gas exchange. The efficient circulation of water through the pharynx allows tunicates to survive in various marine environments.<\/p>\n\n\n\n<p>Thus, the pharynx in tunicates is a multifunctional organ, essential for both <strong>feeding<\/strong> and <strong>breathing<\/strong>, ensuring survival in their sessile (attached) lifestyle.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>List two functions of the pharynx in tunicates. The correct answer and explanation is : Two Functions of the Pharynx in Tunicates: Explanation: Tunicates, also known as sea squirts, are marine invertebrates belonging to the subphylum Urochordata. They have a specialized structure called the pharyngeal basket, which is a perforated and ciliated pharynx that performs [&hellip;]<\/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-204346","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/204346","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=204346"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/204346\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=204346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=204346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=204346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}