Asked by harrytheultimateguy | 29th Dec, 2008, 12:20: PM

Expert Answer:

Protochordates may not have a proper notochord present at all stages in their lives or for the entire length of the animal. So the notochord may be present in the same form as in larvae stage or may be absent in the pupae stage.

Answered by  | 30th Dec, 2008, 08:21: AM

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