5, like all worms.
A worm has multiple "hearts" called aortic arches because they work together to pump blood and nutrients throughout the worm's body. Having multiple hearts helps ensure that oxygen and nutrients reach all parts of the worm efficiently.
The octopus has three hearts. Two pump blood to the gills, and one pumps blood to the rest of the body.
A worm actually has seven hearts, i don't know why but it does. Example: If you chop up a worm into 7 pieces it will still be living because there is likely to be a heart in each section. DOes this help and it is all i know????
Earthworm has five hearts= Earthworm hearts in action click on the link below = http://academic.scranton.edu/faculty/can... Colored diagrams on the link below = click onit = http://cache.eb.com/eb/image?id=72114&re... http://www.nrwmg.vic.gov.au/images/ana1....
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Five hearts
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No!! the earth worm has 5 hearts
Worms have 5 hearts. Worms have an organ that behaves like a heart, an aortic arch, they have five arches.
An earthworm, Annelida [= ringed] has up to five pairs of hearts.
NO
A worm has multiple "hearts" called aortic arches because they work together to pump blood and nutrients throughout the worm's body. Having multiple hearts helps ensure that oxygen and nutrients reach all parts of the worm efficiently.
There are actually 5 hearts in an earthworm. Correction: They technically aren't hearts they are considered aortic arches
they have 5 hearts to survive.
An earthworm, Annelida [= ringed] has up to five pairs of hearts.
A worm.
The hearts that worm's have are very different from the heart's that humans have. The worm equivalent of a heart is called the aortic arch and does not contain chambers or valves, and does not get oxygen-rich blood to the lungs. The aortic arches simply pump blood throughout the worm's body.