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    Examples of Hemichordata | Free Biology Notes

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    Examples of Hemichordata

    After reading this article you will learn about Examples of Hemichordata

    Examples of Hemichordata

    Balanoglossus

    • Commonly known as acorn worm or tongue worms
    • Solitary and burrowing worm-like marine animal
    • The body of Balanoglossus is soft, elongated, cylindrical and covered with mucus
    • Length of animal varies from 2 cm to 2.5 meters
    • The body is un-segmented and divided into three regions:- Proboscis, Collar and Trunk
    • Alimentary canal straight; mouth and anus at opposite ends.
    • Sexes separate and Development with or without tornaria larva.

    Cephalodiscus

    • Sedentary and colonial marine animal
    • Body divided into three regions:- Proboscis, Collar and Trunk
    • Tentacles aris­ing from collar
    • Sexes are hermaphrodite and development is direct
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