A) Pharynx without gill slits
B) Absence of notochord
C) Ventral tubular nerve cord
D) Pharynx with gill slits
Correct Answer: D
Solution :
[d] Pharyngeal gill slits are present in hemichordates as well as in chordates. Notochord is present in chordates only. Ventral tubular nerve cord is characteristic feature of non-chordates.
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