describe the type of excretory &circulatory system in annelida?

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https://www.meritnation.com/ask-answer/question/what-type-of-blood-circulatory-system-does-the-phylum-anneli/diversity-in-living-organisms/8921867 

Paired excretory organs called nephridia are present in annelida.

https://www.meritnation.com/ask-answer/question/write-a-note-on-nephridia/life-processes/7764921

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