#Question id: 12000
#Unit 10. Ecological Principles
The graph below shows the growth rates of populations of bacteria that have evolved for many generations at different culture temperatures (25°C, 30°C, and 35°C). Each population grows over only a limited range of temperatures (its thermal niche), which are bounded by its critical thermal limits. Within this range, growth rate increases with temperature up to a maximal value and then declines rapidly with increasing temperature. Growth rates are known to be the major determinant of fitness for these bacteria.
Which of the following is true concerning the thermal dependence of growth rate between 25°C and 30°C in these populations?
#Question id: 12001
#Unit 10. Ecological Principles
The graph below shows the growth rates of populations of bacteria that have evolved for many generations at different culture temperatures (25°C, 30°C, and 35°C). Each population grows over only a limited range of temperatures (its thermal niche), which are bounded by its critical thermal limits. Within this range, growth rate increases with temperature up to a maximal value and then declines rapidly with increasing temperature. Growth rates are known to be the major determinant of fitness for these bacteria.
Which population has the highest fitness at 25°C ?
#Question id: 12002
#Unit 10. Ecological Principles
#Question id: 12003
#Unit 10. Ecological Principles
The graph below shows the growth rates of populations of bacteria that have evolved for many generations at different culture temperatures (25°C, 30°C, and 35°C). Each population grows over only a limited range of temperatures (its thermal niche), which are bounded by its critical thermal limits. Within this range, growth rate increases with temperature up to a maximal value and then declines rapidly with increasing temperature. Growth rates are known to be the major determinant of fitness for these bacteria.
If all three populations were mixed together and placed at 37°C, which of the following would be most likely to happen?
#Question id: 12004
#Unit 10. Ecological Principles
The figure above shows the distribution of 10 plant species that grow along a regular environmental gradient, such as depth of the water table in a river valley. All other environmental factors are similar. This figure demonstrates that
#Question id: 12005
#Unit 10. Ecological Principles