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Q: Name the respiratory organs of insects
  • A. Skin
  • B. Body Surface
  • C. Gills
  • D. Tracheae
Correct Answer: Option D - The respiratory organ of the insects consists of a system of air-filled tubes called the tracheae, which are in most cases in open connection with the outside air through opening in the body wall, the spiracles. These external openings, which act as muscular valves in some insects, leads to the internal respiratory system, a densely network array of tubes called Tracheae
D. The respiratory organ of the insects consists of a system of air-filled tubes called the tracheae, which are in most cases in open connection with the outside air through opening in the body wall, the spiracles. These external openings, which act as muscular valves in some insects, leads to the internal respiratory system, a densely network array of tubes called Tracheae

Explanations:

The respiratory organ of the insects consists of a system of air-filled tubes called the tracheae, which are in most cases in open connection with the outside air through opening in the body wall, the spiracles. These external openings, which act as muscular valves in some insects, leads to the internal respiratory system, a densely network array of tubes called Tracheae