The worms simple circulatory system is sufficent to its demands and has had no need to develop a more complex one.
5, like all worms.
A worm
No one answer, since it depends on which worm.
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....
Five hearts
5
There are actually 5 hearts in an earthworm. Correction: They technically aren't hearts they are considered aortic arches
5, like all worms.
A worm
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.
Worms have 5 harts. If you can you can get a worm and get something sharp (like a shovel) you can cut the worm as many times as you can, (like 5) then look at the worm WE have tried this and so I warn you if you don't want to see all of the pieces wiggling don't look). NOTE: DO THIS WITH A LIVE WORM>
An earthworm, Annelida [= ringed] has up to five pairs of hearts.
NO
they have 5 hearts to survive.
An earthworm, Annelida [= ringed] has up to five pairs of hearts.