Metamerism is a characteristic of:

Flatworms

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Mollusca

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Porifera

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Annelida

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Solution

The correct option is D Annelida
Metamerism is a type of segmentation where the body is divided externally and internally into segments with linear repetition of organs in each segment. This is a characteristic feature of earthworm, leech and Nereis, which belong to phylum Annelida.
Poriferans and molluscs do not exhibit segmentations and some flatworms exhibit pseudosegmentation.

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