In this figure, the slope of the lines for active lizards and inactive ones suggests that
A) active lizards are regulating their temperature in some way.
B) inactive lizards are regulating their temperature in some way.
C) there is no difference in trends between the two types.
D) active lizards retain their cool across a wider variety of temperatures.
A
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Look at the graph for Scutigerina weberi (note the scale of the y-axis) in the figure above. 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 carbon dioxide (CO2) emission peaked and closed when CO2 emission was low. D) The centipede had its spiracles closed when carbon dioxide (CO2) emission peaked and open when CO2 emission was low.
Which of the following terms refers to the change in
relative day length? a. phytoerythrin b. phototropism c. photorhythmic d. photochrome e. photoperiodism
The "sleep center" is located in the midbrain and influences emotions, short-term memory, and behavior.
a. true b. false
Which of the following statements is not true about natural selection?
a. Offspring of individuals that are better adapted will make up a larger proportion of the next generation. b. Natural selection directs evolution by preserving traits acquired during an individual's lifetime. c. Natural selection depends on the genetic variability in a population, which arises through mutations. d. Natural selection acts to preserve favorable traits and eliminate unfavorable traits. e. Natural selection leads to adaptive evolutionary change.