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pkclary pkclary
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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.) Copyright (c) 2002, The Company of Biologists and the Journal of Experimental Biology.

    
   Figure 33.2

23) Look at the graph for Cormocephalus morsitans. What is the best interpretation of these results?
A) The centipede had its spiracles open the entire time.
B) The centipede had its spiracles closed the entire time.
C) The centipede had its spiracles open when CO2 emission peaked and closed when CO2 emission was low.
D) The centipede had its spiracles closed when CO2 emission peaked and open when CO2 emission was low.
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Biological Science, Canadian Edition

Biological Science, Canadian Edition


Edition: 2nd
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mastemamastema
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thanks
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