Question

Mention any six characteristics of phylum hemichordata.

Answer 1

Phylum Hemichordata:

1. Phylum Hemichordata is a small phylum with only a 100 known species, with animals having a worm-like appearance.

Characteristics of Hemichordata:

1. These are closely related to Echinodermata as well as Chordata.
2. These are bilaterally symmetrical, triploblastic, and coelomate animals.
3. The body is made up of an anterior proboscis, a short collar, and a long trunk.
4. They possess an open circulatory system.
5. Excretory organ is proboscis gland.
6. The circulatory system is a closed type.
7. Balanoglossus, sometimes known as the acorn worm, is an example of a hemichordate.