Earthworms do not have hearts in the traditional sense; instead, they possess a series of muscular structures called aortic arches. These aortic arches function similarly to hearts by contracting to pump blood throughout the earthworm's closed circulatory system. The blood is circulated through vessels, delivering nutrients and oxygen to the worm's tissues.
The Five aortic arches serves as hearts.
5
earthworms have a closed circulatory system
the three main part are solar system and digestive system and excretory system
Earthworms have a closed circulatory system. This means that their blood is contained within vessels as it circulates throughout the body, allowing for more efficient transport of nutrients and oxygen. The blood is pumped by a series of muscular structures called aortic arches, which act like hearts. This system enables earthworms to maintain a more regulated flow of blood compared to open circulatory systems.
The intestine.
Earthworms have a unique reproductive system that is hermaphroditic, meaning each individual possesses both male and female reproductive organs. During mating, two earthworms exchange sperm, which they later use to fertilize their own eggs. They produce a cocoon from a special gland, which contains the fertilized eggs and serves as a protective environment for the developing young. This reproductive strategy enhances their ability to reproduce in diverse environments.
Earthworms
A hot water circulator in a residential heating system helps to maintain a consistent temperature throughout the house, reduces energy consumption by minimizing heat loss in pipes, and provides faster hot water delivery to faucets and showers.
closed circulatory system
closed circulatory system
earthworms have a closed circulatory system