How many hearts does a earthworm have?

5 days ago ... Earthworms play an important role in many ecosystems, breaking down rotting organic matter into its simple components for use by plants. read more

Earthworms can have five, 10 or zero hearts, depending on how you define"heart." They have five pairs of aortic arches that run along the length of its body (or 10 single arches, if you count each pair as two separate structures). read more

An earthworm has five aortic arches, each functioning similarly to a heart. The aortic arches have the purpose of pumping blood through the dorsal and ventral blood vessels. The dorsal blood vessel carries blood to the front of the body, while the ventral vessel carries blood to the back. read more

Earthworm has five"aortic arches". Since it is an invertebrate, we cannot call them hearts (Even though most of the people refer to them as 'hearts'). read more