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Aortic arches are absent in earth worm .

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Aortic arches are absent in earth worm .

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aortic arches is another term for heart, and an earthworm has 5.

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There are 5 aortic arches, they are "hearts". They pump blood around the worm and help digestion.

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The function of an earthworm's aortic arches are to pump blood to the ventral blood vessel and into the body.

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They are responsible for holding up the aortic feet.

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