exam 3 asu bio 182 Questions And Answers Graded A
Which group is not a population? correct answer: all four groups are populations
How would you estimate the number of whales in a population? correct answer: mark and recapture
What is a population? correct answer: a group of individuals of the same species living in the same area at the same time
True or False? Sampling quadrats would be the better method for estimating the number of whales in a population. correct answer: false
True or False? Mark and recapture would be the better method for estimating the number of saguaros in a population. correct answer: true
True or False? The shrinking population between 1965 and 1970
could have resulted from a decrease in the birth rate or an increase in the death rate. correct answer: true
True or False? The growing population between 1985 and 1995 could have resulted from a decrease in emigration or an increase
in immigration. correct answer: true
The human population has grown ____________________ correct answer: exponentially The growth of a population depends on __________________ correct answer: the birth rate minus the death rate.
A population stops growing when it _____________________ correct answer: reaches its carrying capacity.
True or False? The carrying capacity of a population depends on
the resources available in the environment. correct answer: true
Why do bluegills nest on the edge of the lake? correct answer: The habitat in the shallow water might receive more solar radiation, holds more zooplankton (which is what they eat), more protective over young than it in deeper water where larger fish reside, more algae for the fish to hide in, warmer water for embryos to develop quickly and enhance survival/fitness.
Activity: Write a Figure Legend correct answer: Bluegills prefer certain water temp; when given a choice between 27 degrees celsius and 31 degrees celsius, bluegills spent a majority
of their time at 31 degrees celsius.
True or False? If males compete for space, a large male will likely force a small male to spend less time on the side of the tank with the optimal temperature. correct answer: true
True or False? Both models assume that no individuals immigrate into the population. correct answer: false
t/f: When possible, a bluegill prefers to have a body temperature around 31°C. correct answer: true T/F: When competing with an adult, a juvenile bluegill will always have a lower body temperature than its preferred temperature. correct answer: False (If the environment hotter than preferred, on average, large bluegill will force small bluegills to remain in parts of water that are hotter than preferred)
T/F: All else being equal, the carrying capacity of a lake would likely increase as more parts of the lake warm to 31°C. correct answer: true
T/F: All else being equal, a juvenile bluegill will likely grow slower in a lake with many adult bluegills than in a lake with few adults correct answer: true
T/F: The growth of a bluegill population would be better described by a model without density dependence than by a model with density dependence. correct answer: false, Because access to suitable temperatures is limited, the growth of the population will have a carrying capacity, which requires density dependence
T/F: The number of whales was more likely estimated by sampling than by mark-recapture. correct answer: false
T/F: The shrinking population between 1965 and 1970 could have resulted from a decrease in the birth rate or an increase in the death rate. correct answer: true
Which group is not a population? correct answer: all four groups are populations
How would you estimate the number of whales in a population? correct answer: mark and recapture
What is a population? correct answer: a group of individuals of the same species living in the same area at the same time
True or False? Sampling quadrats would be the better method for estimating the number of whales in a population. correct answer: false
True or False? Mark and recapture would be the better method for estimating the number of saguaros in a population. correct answer: true
True or False? The shrinking population between 1965 and 1970
could have resulted from a decrease in the birth rate or an increase in the death rate. correct answer: true
True or False? The growing population between 1985 and 1995 could have resulted from a decrease in emigration or an increase
in immigration. correct answer: true
The human population has grown ____________________ correct answer: exponentially The growth of a population depends on __________________ correct answer: the birth rate minus the death rate.
A population stops growing when it _____________________ correct answer: reaches its carrying capacity.
True or False? The carrying capacity of a population depends on
the resources available in the environment. correct answer: true
Why do bluegills nest on the edge of the lake? correct answer: The habitat in the shallow water might receive more solar radiation, holds more zooplankton (which is what they eat), more protective over young than it in deeper water where larger fish reside, more algae for the fish to hide in, warmer water for embryos to develop quickly and enhance survival/fitness.
Activity: Write a Figure Legend correct answer: Bluegills prefer certain water temp; when given a choice between 27 degrees celsius and 31 degrees celsius, bluegills spent a majority
of their time at 31 degrees celsius.
True or False? If males compete for space, a large male will likely force a small male to spend less time on the side of the tank with the optimal temperature. correct answer: true
True or False? Both models assume that no individuals immigrate into the population. correct answer: false
t/f: When possible, a bluegill prefers to have a body temperature around 31°C. correct answer: true T/F: When competing with an adult, a juvenile bluegill will always have a lower body temperature than its preferred temperature. correct answer: False (If the environment hotter than preferred, on average, large bluegill will force small bluegills to remain in parts of water that are hotter than preferred)
T/F: All else being equal, the carrying capacity of a lake would likely increase as more parts of the lake warm to 31°C. correct answer: true
T/F: All else being equal, a juvenile bluegill will likely grow slower in a lake with many adult bluegills than in a lake with few adults correct answer: true
T/F: The growth of a bluegill population would be better described by a model without density dependence than by a model with density dependence. correct answer: false, Because access to suitable temperatures is limited, the growth of the population will have a carrying capacity, which requires density dependence
T/F: The number of whales was more likely estimated by sampling than by mark-recapture. correct answer: false
T/F: The shrinking population between 1965 and 1970 could have resulted from a decrease in the birth rate or an increase in the death rate. correct answer: true
