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Mariana [72]
3 years ago
8

The first invertebrates to show both segmentation and a complete digestive system belong to the

Biology
1 answer:
Grace [21]3 years ago
4 0
The first invertebrates to show both segmentation and a complete digestive system belong to the phylum Annelida that includes earthworms, leech, sandworms, etc.

These segmented worms have complete digestive system which is also known as tube-within a tube. These can be found in freshwater, marine water or can even be terrestrial.
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