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Tracheae of cockroach and mammal are similar in having

1. paried nature
2. noncollapsible walls
3. ciliated inner lining
4. origin from head

Correct answer: noncollapsible walls

Solution

Cockroach tracheae and mammalian airways both need to stay open for gas exchange, so they have structural support that prevents collapse. Cilia are not a feature of cockroach tracheae, and the other options do not describe a shared property.

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