Spiders breathe by means of
A)gills.
B)diffusion across the soft cuticle.
C)an extensive system of tracheae more complex than is found in insects.
D)book lungs or primitive tracheae.
E)coxal glands.

Question

Quizplus · Accepted Answer

Spiders breathe by means of book lungs or primitive tracheae. Book lungs are specialized respiratory organs that look like the pages of a book and exchange gases through a thin cuticle with a rich supply of blood vessels. Primitive tracheae are a less specialized system of air tubes that bring air directly to the spider's tissues.

Spiders Breathe by Means of