Insect tracheae are kept from collapsing by
A)having walls of thick chitin.
B)having spirals of cuticle called taenidia.
C)being filled with water all the way to the spiracle.
D)being inflated and under higher air pressure.
E)being wrapped in insect muscle.

Question

Quizplus · Accepted Answer

Insect tracheae contain spirals of cuticle called taenidia which prevent them from collapsing. Chitin and muscle do not play a role in preventing collapse, being filled with water would actually impede gas exchange, and insects do not use air pressure to inflate their tracheal system.

Insect Tracheae Are Kept from Collapsing by