Question : Respiratory system of cockroach is formed of spiracles and tracheal interconnections. Why is it said to be more efficient than that of earthworm? Why inspiration of cockroach is said to be a passive process while it is an active process in man?

Question : Respiratory system of cockroach is formed of spiracles and

1.	Question : Respiratory system of cockroach is formed of spiracles and tracheal interconnections. Why is it said to be more efficient than that of earthworm? Why inspiration of cockroach is said to be a passive process while it is an active process in man?
Answer» Solution :The respiratory SYSTEM of cockroach is well developed compared with other terrestrial insects. Branched TUBES known as trachea open through 10 pairs of SMALL HOLES CALLED spiracles or stigmata