In urochordates, the chordate characters are

Well developed

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Present only in larva

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Present in adult

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Present both in adult and larva.

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Solution

The correct option is B Present only in larva
Urochordates, which classify as Chordates, posses the chordate characters only in the larval stage. There are primarily four chordate characters and these include:
1) A notochord
2) Pharyngeal slits
3) A dorsal hollow nerve cord
4) Post-anal tail
However, after development, the adult urochordates retain only the pharyngeal slits and lack the other features.

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