What structures common to all chordates do adult tunicates possess? Why are tunicates considered chordates?<\/p>\n\n\n\n
The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n Adult tunicates possess pharyngeal slits<\/strong> as the only chordate structure.<\/p>\n\n\n\n Tunicates, also known as urochordates<\/strong>, are marine invertebrates that belong to the phylum Chordata<\/strong>. Although they undergo significant morphological changes during their life cycle, they are considered chordates because of the key structures they exhibit during their larval stage<\/strong>.<\/p>\n\n\n\n In their larval stage<\/strong>, tunicates possess all four hallmark characteristics of chordates:<\/p>\n\n\n\n However, as tunicates transition into their sessile adult form<\/strong>, they undergo metamorphosis<\/strong>, during which they lose the notochord, dorsal hollow nerve cord, and post-anal tail. The only chordate feature retained in adult tunicates is the pharyngeal slits<\/strong>, which are used for filter feeding.<\/p>\n\n\n\n Despite losing most chordate traits in adulthood, tunicates are classified as chordates because their larval stage clearly exhibits all chordate characteristics<\/strong>. This is a crucial aspect of evolutionary classification, as scientists group organisms based on their developmental features rather than just adult morphology.<\/p>\n\n\n\n Tunicates are of great interest in evolutionary biology because they are believed to be closely related to vertebrates. Their simplified adult form suggests that they have undergone a secondary loss of chordate features due to their sedentary lifestyle, rather than never having them at all.<\/p>\n\n\n\n Thus, while adult tunicates only retain pharyngeal slits<\/strong>, their classification as chordates is justified by their larval anatomy and genetic relationships with other chordates<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":" What structures common to all chordates do adult tunicates possess? Why are tunicates considered chordates? The correct answer and explanation is : Answer: Adult tunicates possess pharyngeal slits as the only chordate structure. Explanation: Tunicates, also known as urochordates, are marine invertebrates that belong to the phylum Chordata. Although they undergo significant morphological changes during […]<\/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-204335","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/204335","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=204335"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/204335\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=204335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=204335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=204335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Answer:<\/h3>\n\n\n\n
Explanation:<\/h3>\n\n\n\n
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