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

question 22

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?

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Definitions:

Nucleus Accumbens

A region in the brain that plays a central role in the reward circuit, associated with pleasure, reinforcement learning, and addiction.

Reward Circuitry

The brain systems involved in the recognition and pursuit of rewards, playing a key role in motivation, pleasure, and addiction.

Contraception

Methods or devices used to prevent pregnancy as a result of sexual intercourse, aiming at controlling fertility and childbirth.

Intrauterine Device

A small contraceptive device, often T-shaped, inserted into the uterus to prevent pregnancy.