Two common respiratory organs of invertebrates are trachea and gills. Diffusion lungs, as contrasted with ventilation lungs of vertebrates, are confined to small animals, such as pulmonate snails and scorpions.
kasi yung iba hindi yan sa respiratory system nabibilang,sa ibang system na yan
It allows us to exchange gases as we breathe.
d. lungs yan talaga ung main respiratory organ
kase b d a kailangan ko daw habaan sagot para masend
The answer is A
The primary organ of the respiratory system are the lungs, which carry out this exchange of gases as we breathe. The lungs work with the circulatory system to pump oxygen-rich blood to all cells in the body.