Question

Through which of the following does the maggot of housefly breath?

• A. External gills
• B. Tracheal system
• C. General body surface
• D. Anal tubercles

Answer 1

Answer: (B)

Tracheal system

Arthropods have an outer covering of cuticle over their bodies. They have a tracheal system for respiration which is composed of air-filled tubes called tracheae. The tracheae open to the outside via spiracles. Sometimes respiration also happens via simple diffusion across the tracheal tubes.

So, the correct answer is 'Tracheal system'.