that they are a type off a sail OK
Any animal that breathes has a respiratory organ
the type of respiratory organ mollusks have is GILLS.
the primary respiratory organ for cockroach is trachea
Compared to what? It is the only respiratory organ in humans.
lungs is respiratory organ of cow
Thepneumostome (or breathing pore) is a feature (the respiratory opening) of the external body anatomy of an air-breathing land slug or land snail. It is a part of respiratory system of gastropods.
No, it's in the ear.
The lungs
The Lungs.
The lungs are the main organ of the respiratory system, but they are also an organ in the circulatory system.
The respiratory system.