Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 55, Problem 1A
If the
a.
b. population growth rates may decrease because individuals have trouble finding mates.
c. population rates may remain unchanged if the population was already well below the carrying capacity.
d. All of the choices are correct.
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Which of the following is true of overexploitation? Select ALL that apply.
a
Only animals are affected by overexploitation.
b
Overfishing is due to modern fishing techniques that can take a lot of fish at once.
c
Amphibians are overexploited for food, medicine, and research.
d
Overexploitation means harvesting species at a rate slower than the population can recover.
e
Many birds are overcollected for the pet trade.
A population of deer suddenly decreases dramatically in number. This most likely occurred because ____.
a.
the was a gradual decrease in environmental resistance
b.
the population approached its carrying capacity
c.
population crashes are common and expected on a regular basis regardless of population size
d.
the number of resources increased steadily
e.
the population increased beyond its carrying capacity
Which of the following is a factor that would decrease the size of a population? A. Death rate is higher than the birth rate B. Abundant food supply C. Immigration D. Birth rate is higher than the death rate
Chapter 55 Solutions
Biology
Ch. 55 - Source-sink metapopulations are distinct from...Ch. 55 - The potential for social interactions among...Ch. 55 - When ecologists talk about the cost of...Ch. 55 - Prob. 4UCh. 55 - The difference between exponential and logistic...Ch. 55 - Prob. 6UCh. 55 - Which of the following is an example of a...Ch. 55 - If the size of a population is reduced due to a...Ch. 55 - In populations subjected to high levels of...Ch. 55 - In a population in which individuals are uniformly...
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- Based on the data, what is the estimated carrying capacity for the population and what factor may have led to a change in data at day three? A. The estimated carrying capacity is approximately 188 thousand. The population may have decreased during day three because of increased pressure from a limiting factor, such as unfavorable temperature. B. The estimated carrying capacity is approximately 188 thousand. The population may have decreased during day three because of decreased pressure from limiting factors, such as more food being available. C. The estimated carrying capacity is approximately 167 thousand. The population may have decreased during day three because of increased pressure from a limiting factor such as reduction of food available. D. The estimated carrying capacity is approximately 167 thousand. The population may have decreased during day three because of decreased pressure from a limiting factor such as reduction of predators eating the…arrow_forwardAn ecologist studied how many kangaroo rats could be supported in two different habitats, a high‐quality habitat and a low‐quality habitat. The ecologist estimated the per capita benefit in each habitat as the number of individuals increased.arrow_forwardA good number of snail population in the stagnant waters between rice paddies is growing under natural conditions with limited resources. As the snail population increases in size, how will population density affect its growth rate? a. Population density will increase and the rate of population growth will eventually slow. b. Population density will remain constant and population growth will increase. c. Population density will become unstable and population growth will stop. d. Population density will decrease and population growth will eventually increase.arrow_forward
- Which statement is a valid analysis about bison movement and the carrying capacity of Yellowstone National Park? A. The decrease in the northern herd's population is explained by its inability to migrate and the park's decreasing carrying capacity. B. The fact that bison only migrate in years of deep snow indicates that they have exceeded the park's carrying capacity. C. The carrying capacity for other animals found in Yellowstone has increased due to the bison's migration outside of the park. D. The movement of bison beyond park boundaries is not due to the bison population being too large for the park's carrying capacity. Part B: Which selection from the text provides evidence that directly supports this analysis? A. They move to lower elevation ranges during the winter months in response to snow accumulation and snowpack development. B. The model integrates data from several ecosystem-related variables,…arrow_forwardWhat is the best explanation for a decrease in a population of wolves in an area? A. The amount of food decreases. B. The amount of space increases. C. The amount of food increases. D. The amount of competition decreases.arrow_forwardWhich statement best describes the recovery of the Mexican wolf population? A. It is experiencing logistic growth because the rate of population growth increases without slowing. B. It is experiencing logistic growth because the rate of population growth increases but slows with time. C. It is experiencing exponential growth because the rate of population growth increases without slowing. D. It is experiencing exponential growth because the rate of population growth increases but slows with time.arrow_forward
- A population will most likely deplete the resources of its environment if the population . A. grows beyond carrying capacity B. must share resources with many other species C. moves frequently from one habitat to another D. has a low reproductive potentialarrow_forwardThe Human Population and Its Impact: Population Ecology Compared to a developed country, which of the characteristics below is a DEVELOPING COUNTRY likely to exhibit? a. high total fertility rate b. slow population growth c. high percentage of elderlyarrow_forwardUsing the graph which country shows the most population growth?A United States B Kenya C they both are growing D Population growth cannot be determined from the graphsarrow_forward
- Which of the following events would not negatively impact Yellowstone’s grey wolf carrying capacity? a. snow in winter b. a beaver damming a river upstream c. a forest fire d. chronic wasting disease in the deer populationarrow_forwardAs a population’s size increases toward the ecosystem’s carrying capacity,a. environmental resistance increases.b. the rate of population growth slows.c. the death rate increases.d. All of the above are correct.arrow_forwardWhat would happen to the human population if the number of births becomes equal to the number of deaths?a. The human growing rate would be 1.1% per year.b. The human population curve would acquire a J-shape.c. The Earth’s carrying capacity would decrease.d. The human population would stop growingarrow_forward
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