NEET BiologyClass 11Coelom, segmentation and notochordEasySingle correct

The body of an earthworm is externally and internally divided into segments with a serial repetition of organs. In which phylum is such metamerism first seen?

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The body of an earthworm is externally and internally divided into segments with a serial repetition of organs. In which phylum is such metamerism first seen?

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