Where in an Insect Tracheal System Does Gas Exchange Occur

Question

Where in an insect tracheal system does gas exchange occur between the air and a cell?
A) in the tracheoles
B) in the tracheal branches
C) in the trachea
D) in the gill filaments

Accepted Answer

Gas exchange in insects primarily occurs in the tracheoles, which are the smallest tubes in the insect tracheal system that directly deliver oxygen to the cells and remove carbon dioxide.