example of nephredia
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Annelids (e.g., Earthworm, Neries/sandworm, Leech). The excretory organs are metanephridia. They are characterized by the presence of a ciliated funnel shaped opening or nephrostome.
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These are of three types according to their location in the body: 1. Septal nephridia
2. Integumentary nephridia .
3. Pharyngeal nephridia.
The function of the nephridia is to carry off waste matter from the fluid which fills the body-cavity.
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