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Question

Which organ is present in Hemichordata instead of notochord?


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Solution

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.

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