42. The graph shows the relationship between metabolic rate and running speed in two animal species, species A and species B. Which of the following conclusions is supported by the data?
Answer: C
In both species, metabolic rate increases as running speed increases.
The data indicates that there is a positive correlation between metabolic rate and running speed for both species A and B, suggesting that as the running speed increases, so does the metabolic rate.
A) Species A can run faster than species B.
This option is incorrect as the graph does not provide specific information about the maximum running speeds of species A and B relative to each other. The focus of the data is on the relationship between metabolic rate and running speed, rather than direct speed comparisons.
B) Species B has a higher metabolic rate than species A.
This statement is inaccurate based on the provided information. The graph shows the relationship between metabolic rate and running speed, but does not indicate that one species consistently has a higher metabolic rate than the other at any particular running speed.
C) In both species, metabolic rate increases as running speed increases.
This conclusion is supported by the data presented in the graph. Both species A and B exhibit an upward trend in metabolic rate corresponding to increases in running speed, confirming the positive relationship between these two variables.
D) In both species, metabolic rate and running speed are not related.
This option is clearly incorrect. The graph demonstrates a relationship between metabolic rate and running speed, as both variables increase together, contradicting the assertion that they are not related.
Conclusion
The correct conclusion, that metabolic rate increases with running speed in both species, is strongly supported by the data shown in the graph. Other options either misinterpret the data or make unfounded claims about the species' capabilities and characteristics. Thus, option C stands out as the only valid interpretation of the information presented.