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  4. Cockroach blood does not contain respiratory pigment. It means

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Q. Cockroach blood does not contain respiratory pigment. It means

VMMC MedicalVMMC Medical 2008

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.