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Which among the following is incorrect about chordata?(a) They have paired muscles(b) Post anal tail must be present in chordates(c) Their notochord vanishes after certain period of time(d) Pharyngeal gill slits are presentI had been asked this question in an internship interview.My question comes from Classification of Animal Kingdom into Different Phylum-2 topic in division Animal Kingdom of Biology – Class 11

Answer»

Right choice is (b) Post anal tail must be PRESENT in CHORDATES

Easy explanation: Chordates have PAIRED muscles. Post anal tail is present at the embryo but might VANISH after certain period of time. Their notochord also vanishes after certain period of time. Pharyngeal gill slits are present.



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