Human beings breathe using our lungs. Oxygen goes into our blood and carbon dioxide goes out of our blood and into our lungs. When we breathe out we get rid of it. These gasses dissolve in our blood.
In water there is dissolved oxygen. Fish don't have lungs; they have specially developed organs called gills. As water flows over the gills oxygen is absorbed and carbon dioxide can come out of the fish's blood through the delicate membrane of the gills. Some fish are able to pump water over their gills, which means that they can lie on the bottom or stay still in the water. Other fish need to keep moving to pass fresh water over their gills.
gills
In mammals and fish it is lungs
gills
a organ systems are shared by both fish and birds because they have the same respiratory system, nervous system and reproductive system.
They both have organ system, respiratory system and excrete in a similar way
Mammals use lungs to collect oxygen from the air, fish use gills to collect oxygen from the water.
The fish use gills to respire. it is located on the lateral front side just behind the eyes of the fish
amphibians breath with the help of both gills and lungs. example frog. frog in its larval stage is called a tadpole and its respiratory organ is gills. in its later stages of life (adult) its respiratory organs changes into lungs
Any animal that breathes has a respiratory organ
the type of respiratory organ mollusks have is GILLS.
Compared to what? It is the only respiratory organ in humans.
the primary respiratory organ for cockroach is trachea
lungs is respiratory organ of cow