What are the respiratory organs of Cockroach ?

What are the respiratory organs in cockroach ? By how many apertures they open out ? Name these apertures and mention their position in the body.

What are the respiratory organs in cockroach?

Name the respiratory organs of cockroach.

Name the respiratory organs of a cockroach.

What are the excretory organs of cockroach?

What are the respiratory organs of molluscs ?

What are the respiratory organs of Dolphins ?

Respiratory organs of Cockroach are called

Respiratory organs of Cockroach are called

Respiratory organs of Cockroach are called