Question

Are protochordates and hemichordates the same?

Answer 1

Protochordate:

1. It is an informal category of animals.
2. They are used for invertebrates that are closely related to vertebrates.
3. Therefore, also known as lower chordates.
4. They do have a notochord.
5. They comprise the subphylum Urochordata and Cephalochordata under the phylum Chordata.

Hemichordate:

1. Organisms belonging to the phylum Hemichordata.
2. They have only some characteristics of Chordates while lacking others.
3. They do not have a true notochord.
4. Example- Blanoglossus
5. Therefore, protochordate & hemichordates are not the same.