Name the phylum whose members possess a notochord. explain what a notochord is. in advance!

Chordata
notochord is a mesodermally rod like structure which forms vertebral column in higher vertebrates

The only phylum with Notochord is "Chordata"

Notochord is a rod-like structure, and it can be seen in human babies, but when they grow, it grows into back-bone. Notochord still found in Urochordata and Cephalochordata, but in higher vertebrates like humans, you'll find "Back bone" instead of a notochord.

Hope this helps!

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