Question

In man, the structure with a function similar to spiracles of cockroach are

• A. Lungs
• B. Alveoli
• C. Bronchioles
• D. Nostrils

Answer 1

The correct option is D Nostrils

The respiratory system of cockroach is a complex network of tubes called as the "tracheal system". Air enters the body through valve-like openings in the exoskeleton, called spiracles. These spiracles are similar in function to the nostrils of a human.
The nostrils are the openings of the nasal cavities, whose function is to warm air on inhalation and remove moisture on exhalation. They also connect the nose to the throat (the nasopharynx), through which air is inhaled and exhaled in respiration. Thus making it possible to breathe air.

So, the correct answer is option D.