Which of the following statements about deuterostomes is false? <\/p>\n\n\n\n
A All deuterostomes have a similar pattern of early embryonic development. <\/p>\n\n\n\n
B All deuterostomes are triploblastic and have three tissue layers. <\/p>\n\n\n\n
C All deuterostomes have a coelom. <\/p>\n\n\n\n
D All deuterostomes exhibit radial symmetry in their bodies.<\/p>\n\n\n\n
The correct answer and explanation is:<\/strong><\/mark><\/p>\n\n\n\n Correct Answer: D. All deuterostomes exhibit radial symmetry in their bodies.<\/strong> Deuterostomes are a major group of animals that include echinoderms<\/strong> (such as sea stars and sea urchins), chordates<\/strong> (which include all vertebrates), and hemichordates<\/strong> (like acorn worms). They are united by key developmental characteristics during early embryogenesis.<\/p>\n\n\n\n True<\/strong> \u2013 Deuterostomes exhibit radial, indeterminate cleavage<\/strong>, and during gastrulation, the blastopore becomes the anus<\/strong> (the mouth forms secondarily). This is the hallmark of deuterostomic development.<\/p>\n\n\n\n True<\/strong> \u2013 All deuterostomes are triploblastic<\/strong>, meaning their embryos form three germ layers<\/strong>: ectoderm, mesoderm, and endoderm. This enables them to develop complex tissues and organs.<\/p>\n\n\n\n True<\/strong> \u2013 Deuterostomes are coelomates<\/strong>, meaning they possess a true coelom<\/strong>, a fluid-filled body cavity completely lined with mesoderm. This feature supports organ development and complexity.<\/p>\n\n\n\n False<\/strong> \u2013 This is the incorrect statement. While radial symmetry<\/strong> is found in adult echinoderms<\/strong> (like sea stars), it is not<\/strong> a universal feature of all deuterostomes. For instance, chordates<\/strong>, which include humans, exhibit bilateral symmetry<\/strong>, especially in their embryonic and adult forms. Even echinoderms start life as bilaterally symmetric larvae<\/strong> and later develop radial symmetry<\/strong> as adults.<\/p>\n\n\n\n Thus, while radial symmetry can be observed in some deuterostomes, it is not a defining characteristic for the entire group. The presence of bilateral symmetry<\/strong> in chordates disproves the statement.<\/p>\n\n\n\n Option D<\/strong> is false because not all deuterostomes exhibit radial symmetry<\/strong>\u2014only some, like adult echinoderms, do. Most, including humans, are bilaterally symmetrical.<\/p>\n","protected":false},"excerpt":{"rendered":" Which of the following statements about deuterostomes is false? A All deuterostomes have a similar pattern of early embryonic development. B All deuterostomes are triploblastic and have three tissue layers. C All deuterostomes have a coelom. D All deuterostomes exhibit radial symmetry in their bodies. The correct answer and explanation is: Correct Answer: D. All […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-21858","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/21858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=21858"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/21858\/revisions"}],"predecessor-version":[{"id":21859,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/21858\/revisions\/21859"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=21858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=21858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=21858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
This statement is false<\/strong>.<\/p>\n\n\n\nExplanation (300 words):<\/h3>\n\n\n\n
A. All deuterostomes have a similar pattern of early embryonic development.<\/strong><\/h4>\n\n\n\n
B. All deuterostomes are triploblastic and have three tissue layers.<\/strong><\/h4>\n\n\n\n
C. All deuterostomes have a coelom.<\/strong><\/h4>\n\n\n\n
D. All deuterostomes exhibit radial symmetry in their bodies.<\/strong><\/h4>\n\n\n\n
Summary:<\/h3>\n\n\n\n