False - technically earthworms don’t have hearts; they have a very primative version of the organ called an aortic arch, which does pump blood but don’t have the chambers and valves that we would recognize as a heart, these arches are often referred to as hearts for the sake of simplicity. The number of aortic arches in an earthworm varies by species, the typical and most common earthworms have 9 arches.
original claim: @OMGFacts; source: wikipedia
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