Number of spiracles in Cockroach is

6 pairs

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8 pairs

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10 pairs

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12 pairs

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Solution

The correct option is D 10 pairs
The respiratory system consists of a network of the trachea, that open through 10 pairs of small holes called spiracles present on the lateral side of the body. Thin branching tubes carry oxygen from the air to all the parts. The opening of the spiracles is regulated by the sphincters. Exchange of gases takes place at the tracheoles by diffusion.
So the correct answer is '10 pairs'.

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