pH tolerance ranges for four different fish species
Fish Species | pH Tolerance Range |
Species A | 6.0-7.5 |
Species B | 5.5-6.0 |
Species C | 6.5-9.0 |
Species D | 5.0-7.0 |
If the pH of a freshwater lake is measured at 7.8, which species is most likely to thrive in this environment?
Species A
Species B
Species C
Species D
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pH tolerance ranges for four different fish species
Fish Species | pH Tolerance Range |
Species A | 6.0-7.5 |
Species B | 5.5-6.0 |
Species C | 6.5-9.0 |
Species D | 5.0-7.0 |
If the pH of an aquatic environment changes from 6 to 8, which of the following is the most likely impact on fish species?
Species A will completely die out because it is above their preferred range of tolerance.
Species B will be the only species to survive because a pH of 8 is too acidic for any of the other fish species to survive.
Species C will be the least impacted because the pH is still within their range of tolerance.
The change in pH will have no impact on any fish populations as they can all adapt quickly to the new conditions.
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Researchers conduct an experiment to assess the salinity tolerance of various crop species. They exposed plants to different NaCl concentrations and monitored their growth. Which of the following is the most appropriate dependent variable to measure the plants' response to varying salinity levels?
Soil pH
Number of seeds that germinated
The type of crop
The concentration of NaCl
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If a species has a narrow ecological tolerance, what does this indicate about its ecological niche?
It can adapt to a wide variety of environmental conditions.
It is highly specialized to a specific environment.
It is a generalist species with broad tolerance.
It is likely to be a pioneer species in new habitats.
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