whats a name of a royal chair?
snail
Transportation
Circulatory and Cardiovascular system
To transport materials throughout the body.
Im searching for the flipping answer! I dont want to answer it ¬_¬
In a unicellular organism there are organelles within the cell, which have specialized functions, and in order for these organelles to work together to create a functioning cell, there has to be some means by which chemicals of various sorts can travel from one organelle to another. That is accomplished by a cellular circulatory system.
closed circulatory system (double circulatory system)
We, as vertebrates, have a closed system in that our blood travels from the heart and back. Other organisms don't have such a system. Open circulatory systems allow all fluids in an organism to mix.
Bacteria do not have a circulatory system like humans. Instead, they rely on diffusion to transport nutrients and waste products across their cell membranes. This process is efficient for small, single-celled organisms without complex body structures.
They're both the circulatory system.
Examples of organisms with open circulatory systems include arthropods, such as insects, spiders, and crustaceans. In these organisms, the circulatory system does not contain blood vessels; instead, the blood is pumped from the heart into body cavities where it directly bathes the tissues before returning to the heart.
Single cell organisms do not have a circulatory system like humans because they are single-celled and do not have complex internal structures. Instead, they rely on simple diffusion for the exchange of gases and nutrients.