Question

Animals with rudimentary notochord have been placed in _________.

Answer 1

Hemichordata:

1. The main characteristics of Hemichordata are the presence of a stomochord.
2. Hemichordates have a rudimentary structure in the collar region called stomochord, a structure similar to a notochord.
3. They are bilaterally symmetrical, triploblastic, and have a true coelom.
4. They have gills for respiration and proboscis glands for excretion.
5. Example - Balanoglossus.

Final answer: Animals with rudimentary notochord have been placed in Hemichordata.