Use the Following Information and Figures to Answer the Question

question 79

Multiple Choice

Use the following information and figures to answer the question.
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. The figures present graphs of their results for two species, Cormocephalus morsitans and Scutigerina weberi.

Compare the graphs in the figure of carbon dioxide (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.

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