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Question

Non-chordates have

A
Notocord
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B
Dorsal tubular nerve chord
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C
Pharyngeal gill cleft
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D
Absence of hepatic portal system
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Solution

The correct option is D Absence of hepatic portal system
Non-chordates does not have a notochord. Nerve cord is ganglionated, double ventral and solid in them. Pharyngeal gill slits and the hepatic portal system is also absent.
So, the correct answer is option D.

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