JUSTIFY THIS STATEMENT - "All vertebrates r chordates but all chordates r not vertebrates".
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the characteristic feature of the phylum chordata include the presence of notochord and paired pharyngeal gill slits. in sub phylum vertebrate the notochord present in the embryos gets replaced by a bony vertebral column in adults. but in cephelovordates,notochord presist throughout life and in urochordates notochord is present only in larval and absent in adult. thus, justified
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All vertebrates are chordates but all chordates are not vertebrates justify the statement
Answer => members of subphylum vertebrate possess notochord during embryonic period.hence the notochord is being replaced by bony vertebral column in adults
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