It's the simpler that exist in vertebrates that has gills as the site of gas exchange, wile other organism have a double loop circulatory system that have lungs instead of gills.
Lower animals like the moluscsearthworm
no
circulatory system
Bacteria do not have a circulatory system
circulatory system
no they have double loop circulatory system but the difference is that they have single ventricle.
A circulatory system that involves the lungs is referred to as a double circulatory system. This is opposed to a single loop circulation that fishes have.
Coral don't have circulatory systems. They just have a gastrovascular system!
single loop and heart with two chambers, like that of a fish.
the 3 fish classes
they have a single loop meaning the blood passes through the heart only once to go to everywhere in the body
y34hh
single loop and heart with two chambers, like that of a fish.
YES.
Fish have closed-loop circulatory systems.
Tadpole has two chambered heart and a single-loop system while the adult has a three chambered heart and a double-loop system
A double circulatory system is also known as a double-loop circulatory system. This system contains two distinct pathways for blood to flow through the body. In most creatures, this consists of the loop between the lungs and heart, and the loop between the heart and body.