Question : Respiratory system of cockreach is formed of spiracles and tracheal interconnectioms. Why is it said to be more efficient than that of earthworm?

Question : Respiratory system of cockreach is formed of spiracles and

1.	Question : Respiratory system of cockreach is formed of spiracles and tracheal interconnectioms. Why is it said to be more efficient than that of earthworm?
Answer» SOLUTION :1. Earthworm has no special respiratory organs. The diffusion of repiratory gases `(O_(2), and CO_(2))` TAKES place through the moist skin only. 2. In cockroach BRANCHED tubes known trachea open through 10 PAIRS of small holes on the lateral side of the body, is REGULATED 3. The opening and closing by valves & sphincter muscles. Thus the respiratory system of cockroach is welldeveloped as compared to earthworm.