Question

Which organ is present in Hemichordata instead of notochord?

Answer 1

Hemichordata:

1. It is classified under Non-Chordata as a distinct phylum.
2. A small group of marine creatures that resemble worms and are organized at the organ-system level makes up this phylum.
3. Example - Balanoglossus

Stomochord:

• A stomochord is seen in Hemichordates.
• The structure of the stomochord is similar to the notochord.
• It is a rudimentary structure present in the collar region.
• The stomochord is called 'stomo'chord because it travels through the mouth.