The respiratory system includes the respiratory tract, the respiratory organs and air sacs.
What type respiration is seen in pigeon ?

The respiratory system includes the respiratory tract, the respiratory organs and air sacs. How many air sacs are present in pigeon. Name them ?

The respiratory system includes the respiratory tract, the respiratory organs and air sacs. What are the functions of air sacs ?

List the respiratory organs of amphibians.

What are the respiratory organs of arthropods?

The respiratory system is made up of trachea, the lungs and the

What is the respiratory zone of respiratory system?

Trachea are the respiratory organ of Annelida.

The respiratory organs of cockroach are ......

What is respiratory volume?