they have have no heart just 5 simillar structures
They have 5 hearts. =)
There is a species of earthworm that has 8 heart chambers.
Fish hearts have 2 main chambers: the atrium and the ventricle. Fish have the simplest hearts of all the vertebrates.
septum
The five hearts and esophagus (which are on top of the central nervous cord)
They have 5 hearts. =)
5
There is a species of earthworm that has 8 heart chambers.
Earthworm.
5
dom't no stupid
It has 3 different hearts. so in other words you could cut the earthworm in half and it could still be living. The earthworms spread out and have other babys. The earthworm has both male, and female sex organs.
Four chambers i think
I think the animal that has 4 hearts is a earthworm, because in my science class i dissected a earthworm, i saw 4 different parts of tiny black hearts as my teacher said they were, so yes i am learning in 7th grade but i did learn a lot about the earthworm including the hearts. so that proves that the animal that has 4 hearts is.... the earthworms.
The earthworm has five pairs of hearts, which would make a total of ten.
Plants do not have hearts. Only animals have hearts and most have four chambers and a few have three.
Human and mammalian hearts have 4 chambers .