These would have to be very small animals and they would transport things by diffusion.
Plants really don't have a circulatory system. Water and nutrients move through a plant by simple physics. It's not pumped anywhere like an animal's circulatory system is.
circulatory system does.
why is circulatory system known as transport system
circulatory system
The Circulatory System......
The circulatory system transport oxygen and respiratory material (food) to the billions of our body cells.
transport
Circulatory system
the urinary system
Example of closed Circulatory animals is worms
Veins belong to the circulatory system, because they transport blood there for they belong to the circulatory system.
grasshoppers, have an open circulatory system