aortic arches is another term for heart, and an earthworm has 5.
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An earthworm does not have any heart at all. But they do have an organ that acts similar to a heart and is usually called aortic arc.
the aortic arches carry blood from the dorsal blood vessel to the ventral blood vessel
There are actually 5 hearts in an earthworm. Correction: They technically aren't hearts they are considered aortic arches
5
The annelids are segmented worms. Although some annelids have appendages and primitive sight organs (photo-reactive pigment spots), earthworms do not. Earthworms do, however, have the typical annelid neural ganglia, and the annelid circulatory system, including the aortic arches that function as the worm's heart. And, of course, earthworms are segmented.