Want this question answered?
Aortic arches are absent in earth worm .
aortic arches is another term for heart, and an earthworm has 5.
Blood
it acts as a heart for an earthworm.... <3
The function of an earthworm's aortic arches are to pump blood to the ventral blood vessel and into the body.
a dissecting microscope
the aortic arches are the earthworms pumping organs. Basically like a heart for them. For example us humans have a heart and arteries to help pump blood in and out of our body. The earthworm has 5 aortic arches located all around its body to help circulate blood around the body
through aortic arches that function as many small hearts
The earthworm doesn't really have a heart. Instead, it has highly muscular blood vessels called the aortic arches that pump their blood.
There are 5 aortic arches, they are "hearts". They pump blood around the worm and help digestion.
They are responsible for holding up the aortic feet.
The blood circulatory system of the earthworm consists of five main blood vessels; it has aortic arches instead of a heart. The coelom also circulates food, so it could be considered a digestive system or a circulatory system.