which of the following statements is not correct regarding respiration is cockroach?
  • only insects have trachea
  • gaseous exchange takes place in trachea
  • spiracles are equivalent to lungs in humans
  • spiracle openings are found on sides of the body of cockroach
Respected sir/madam this is a question from the science hot test papers..
I agree that option C is incorrect statement but option A is also incorrect as other organisms also have trachea.
Please clarify

Dear student,
Please find below the solution to the asked query
 

The third statement is incorrect. First statement is correct because the tracheal system of respiration is found only in insects. Trachea present in other animals perform the function of passing the air from the mouth to the respiratory organ whereas in cockroach the respiration occurs itself in the trachea.

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First one
Third one

 
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only third one
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no. option A is not correct because only insect have. trachea as their blood does not contain haemoglobin and their blood colour is white they no lungs and gills etc so A option is not correct
  • -1
no a is correct because insects blood does not contain haemoglobin and colour is white
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