A) it does not respire
B) cockroach respire anaerobically
C) oxygen passes to all the tissue through diffusion
D) oxygen reaches tissue through tracheoles
Correct Answer: C
Solution :
Blood of cockroach does not contain any respiratory pigment and therefore, play no role in respiration. In cockroach a well-developed respiratory system is present. They possess spiracles, tracheas and tracheoles for respiratory function.
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