{"id":90588,"date":"2025-06-01T10:31:33","date_gmt":"2025-06-01T10:31:33","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=90588"},"modified":"2025-06-01T10:31:33","modified_gmt":"2025-06-01T10:31:33","slug":"which-one-of-the-following-organisms-does-not-possess-notochord-at-any","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-organisms-does-not-possess-notochord-at-any\/","title":{"rendered":"Which one of the following organisms does not possess notochord at any"},"content":{"rendered":"

Which one of the following organisms does not possess notochord at any stage of its life cycle?<\/p>\n

[amp_mcq option1=”Holothuria” option2=”Herdmania” option3=”Exocoetus” option4=”Salamander” correct=”option1″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC CAPF – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe notochord is a flexible, rod-like structure found in chordates. It provides skeletal support and is usually present during embryonic development, being replaced by the vertebral column in most adult vertebrates.
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\nHolothuria (sea cucumber) belongs to the phylum Echinodermata, which are non-chordates. Therefore, they do not possess a notochord at any stage of their life cycle. Herdmania (sea squirt) is a Urochordate (Tunicate), which is a subphylum of Chordata; it possesses a notochord in its larval stage. Exocoetus (flying fish) is a bony fish (Vertebrata, Chordata); it possesses a notochord during embryonic development, which develops into the vertebral column in the adult. Salamander (Amphibia, Vertebrata, Chordata) also possesses a notochord during embryonic development that is replaced by the vertebral column.
\n<\/section>\n
\nThe four key characteristics of chordates are a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail, present at some stage in their life cycle. Echinoderms, such as starfish, sea urchins, and sea cucumbers, are invertebrates and lack these chordate features.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following organisms does not possess notochord at any stage of its life cycle? [amp_mcq option1=”Holothuria” option2=”Herdmania” option3=”Exocoetus” option4=”Salamander” correct=”option1″] This question was previously asked in UPSC CAPF – 2021 Download PDFAttempt Online The notochord is a flexible, rod-like structure found in chordates. It provides skeletal support and is usually present during … <\/p>\n

Detailed SolutionWhich one of the following organisms does not possess notochord at any<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1085],"tags":[1110,1117,1243],"class_list":["post-90588","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1110","tag-biology","tag-taxonomy","no-featured-image-padding"],"yoast_head":"\nWhich one of the following organisms does not possess notochord at any<\/title>\n<meta name=\"description\" content=\"The notochord is a flexible, rod-like structure found in chordates. It provides skeletal support and is usually present during embryonic development, being replaced by the vertebral column in most adult vertebrates. Holothuria (sea cucumber) belongs to the phylum Echinodermata, which are non-chordates. Therefore, they do not possess a notochord at any stage of their life cycle. Herdmania (sea squirt) is a Urochordate (Tunicate), which is a subphylum of Chordata; it possesses a notochord in its larval stage. Exocoetus (flying fish) is a bony fish (Vertebrata, Chordata); it possesses a notochord during embryonic development, which develops into the vertebral column in the adult. Salamander (Amphibia, Vertebrata, Chordata) also possesses a notochord during embryonic development that is replaced by the vertebral column.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-organisms-does-not-possess-notochord-at-any\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following organisms does not possess notochord at any\" \/>\n<meta property=\"og:description\" content=\"The notochord is a flexible, rod-like structure found in chordates. It provides skeletal support and is usually present during embryonic development, being replaced by the vertebral column in most adult vertebrates. Holothuria (sea cucumber) belongs to the phylum Echinodermata, which are non-chordates. Therefore, they do not possess a notochord at any stage of their life cycle. Herdmania (sea squirt) is a Urochordate (Tunicate), which is a subphylum of Chordata; it possesses a notochord in its larval stage. Exocoetus (flying fish) is a bony fish (Vertebrata, Chordata); it possesses a notochord during embryonic development, which develops into the vertebral column in the adult. Salamander (Amphibia, Vertebrata, Chordata) also possesses a notochord during embryonic development that is replaced by the vertebral column.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-organisms-does-not-possess-notochord-at-any\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:31:33+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which one of the following organisms does not possess notochord at any","description":"The notochord is a flexible, rod-like structure found in chordates. 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Herdmania (sea squirt) is a Urochordate (Tunicate), which is a subphylum of Chordata; it possesses a notochord in its larval stage. Exocoetus (flying fish) is a bony fish (Vertebrata, Chordata); it possesses a notochord during embryonic development, which develops into the vertebral column in the adult. 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