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Question
Hemichordates have now been placed with the non-chordates close to echinoderms, because :
Options
Notochord is absent
Pharyngeal gill - slits are lacking
Dorsal nerve cord is absent
Heart is lacking
MCQ
Solution
Hemichordates have now been placed with the non-chordates close to echinoderms, because : Notochord is absent
shaalaa.com
Non Chordates (Invertebrata) - Phylum: Hemichordata
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