Which of these statements is true about the respiratory system of cockroach?(a) Exchange of gases takes place through active transport(b) Sphincters are present at the openings of spiracles(c) There are 8 pairs of spiracles(d) Spiracles are absent on the lateral sides of the bodyThis question was addressed to me during an interview.The query is from Animals Structural Organisations in chapter Structural Organisations in Animals of Biology – Class 11

Which of these statements is true about the respiratory system of cock

1.	Which of these statements is true about the respiratory system of cockroach?(a) Exchange of gases takes place through active transport(b) Sphincters are present at the openings of spiracles(c) There are 8 pairs of spiracles(d) Spiracles are absent on the lateral sides of the bodyThis question was addressed to me during an interview.The query is from Animals Structural Organisations in chapter Structural Organisations in Animals of Biology – Class 11
Answer» Right answer is (b) Sphincters are present at the openings of SPIRACLES The BEST I can explain: Sphincters are present at the openings of spiracles and regulate its opening and closing. Exchange of gases takes place through diffusion at the tracheoles. There are 10 pairs of spiracles which are located on the lateral SIDE of the BODY.

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