Although having evolved independently, the tracheal tubes of mammals and insects are both supported by rigid tissues. the trachea of a mammal is supported by cartilage, and the tracheae of an insect are supported by chitin. what selective pressure most likely led to the convergent evolution of these respiratory structures?

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Biology

Jaelynn

3 October, 14:48

Although having evolved independently, the tracheal tubes of mammals and insects are both supported by rigid tissues. the trachea of a mammal is supported by cartilage, and the tracheae of an insect are supported by chitin. what selective pressure most likely led to the convergent evolution of these respiratory structures?

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Anastasia Moyer · Answer 1

The answer is B. Which is "When the air is in the respiratory medium, there is a greater risk that the tracheal tubes will collapse. The cartilage in the respiratory system gives support to the tubes against negative or positive pressure, during respiration, hence keep it open.