Which of the following is not a characteristic of the phylum Annelida?

Hydrostatic skeleton

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Segmentation

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Pseudocoelom

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Closed circulatory system

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Solution

The correct option is B Pseudocoelom
Pseudocoelom is a false body cavity that is not lined with mesodermal cells. It is found in organisms such as nematodes. Coelom in annelids is schizocoelom that develops from a split in the mesoderm. Therefore, pseudocoelom is not a characteristic of Annelida.
So, the correct option is 'Pseudocoelom'.

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