Annelids

[jdoc04]

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Are there any other important Annelids besides earthworms and leeches? Wiki names those two.

 

[Shunwei]

Are there any other important Annelids besides earthworms and leeches? Wiki names those two.

Probably should know that there are three major classes of annelids, the Polychaeta, Oligochaeta, and the Herudinea. The former two are defined based on the number of external bristles, and the last is the leech. In my opinion, the important thing about the annelids is that they are considered fairly advanced animals, being the first to incorporate a true coeloem, a closed circulatory system, and the first semblance of the vertebrate nephron. If you can understand these details it should be enough on the exam.

 

[jdoc04]

That's what I thought but just wanted to make sure I am not overlooking a detail or two. THANKS!!!