Figure 33.2 Use the Following Information When Answering the Corresponding Question(s)

Multiple Choice

Figure 33.2
Use the following information when answering the corresponding question(s) .
Many terrestrial arthropods exchange gases with their environments by using tracheae,tubes that lead from openings (called spiracles) in the animal's exoskeleton or cuticle directly to the animal's tissues.Some arthropods can control whether their spiracles are opened or closed;opening the spiracles allows the carbon dioxide produced in the tissues to travel down the tracheae and be released outside the animal.Klok et al.measured the carbon dioxide emitted over time (represented by VCO₂) by several species of centipedes.Figure 33.2 presents graphs of their results for two species,Cormocephalus morsitans and Scutigerina weberi.(C.J.Klok,R.D.Mercer,and S.L.Chown.2002.Discontinuous gas-exchange in centipedes and its convergent evolution in tracheated arthropods.Journal of Experimental Biology 205:1019-29. )

-Compare the graphs in Figure 33.2 of CO₂ emission for Cormocephalus morsitans and Scutigerina weberi.What hypothesis can you make about each centipede's habitat?

A) C) morsitans lives in a habitat that provides more carbon dioxide than does S.weberi.
B) C) morsitans lives in a habitat with more predators than does S.weberi.
C) C) morsitans lives in a colder habitat than does S.weberi.
D) C) morsitans lives in a drier habitat than does S.weberi.