Question 1

Over the past 2,000 years, the overall human population has grown

Accepted Answer

A)  exponentially. 
B)  more than exponentially. 
C)  according to the logistic growth equation. 
D)  linearly. 
A)  exponentially. 
B)  more than exponentially. 
C)  according to the logistic growth equation. 
D)  linearly.

Question 2

You are asked to construct a life table for Species A, a nonreproductive shrub you have been studying for 3 years after a wildfire destroyed all the vegetation on your field site. What type of life table would you construct for this scenario? Why?

Accepted Answer

A cohort life table would be m

Question 3

The total area of productive ecosystems required to support a particular individual or population is known as its

Accepted Answer

A)  carrying capacity. 
B)  ecological footprint. 
C)  logistic growth curve. 
D)  survivorship curve. 
A)  carrying capacity. 
B)  ecological footprint. 
C)  logistic growth curve. 
D)  survivorship curve.

Question 4

Refer to the table.
  
-The table shows the survivorship, fecundity, and life expectancies for U.S. females of various ages as of 2009. At approximately which age were half the females still alive in 2009?

Accepted Answer

A)  68 
B)  73 
C)  78 
D)  84 
A)  68 
B)  73 
C)  78 
D)  84

Question 5

The rural community of Happyville has a population distribution made up of 112 individuals between the ages of 1-16, 222 individuals between 17-44, and 514 individuals over 45 years old. Based on this population distribution, without immigration or emigration, the population of Happyville would be expected to

Accepted Answer

A)  stay the same for the next 50 years. 
B)  decline over the next 50 years. 
C)  increase for 5 years then remain the same. 
D)  increase over the next 50 years. 
A)  stay the same for the next 50 years. 
B)  decline over the next 50 years. 
C)  increase for 5 years then remain the same. 
D)  increase over the next 50 years.

Question 6

A population of rabbits reproduces in synchrony at discrete time periods each year. If the current population is 150 and its geometric population growth rate is 1.4 per year, the expected size of the population after two years will be

Accepted Answer

A)  140. 
B)  196. 
C)  210. 
D)  294. 
A)  140. 
B)  196. 
C)  210. 
D)  294.

Question 7

Which statement about Arcese and Smith's studies of the effects of population density on song sparrows is false?

Accepted Answer

A)  The number of young per female that survived to become independent of their parents increased with increasing density. 
B)  At high density, the population size of the sparrows was likely regulated by food shortages. 
C)  The number of eggs laid per female declined with increasing density. 
D)  Nesting pairs that were fed were found to produce many more young than did pairs in the control group. 
A)  The number of young per female that survived to become independent of their parents increased with increasing density. 
B)  At high density, the population size of the sparrows was likely regulated by food shortages. 
C)  The number of eggs laid per female declined with increasing density. 
D)  Nesting pairs that were fed were found to produce many more young than did pairs in the control group.

Question 8

Refer the figure.
  According to the figure, which loggerhead sea turtle group, when 50% protected by management practices, was estimated to produce a positive increase in survival growth rate?

Accepted Answer

A)  Egg/hatchling 
B)  Small juvenile 
C)  Large juvenile 
D)  Subadult 
A)  Egg/hatchling 
B)  Small juvenile 
C)  Large juvenile 
D)  Subadult

Question 9

Refer to the figure.
  Based on the data in the figure, what is the carrying capacity in this environment?

Accepted Answer

A)  5 
B)  10 
C)  28 
D)  39 
A)  5 
B)  10 
C)  28 
D)  39

Question 10

Refer to the figure.
  Which event lead to a substantial decrease in the human population?

Accepted Answer

A)  Accidents from metal working 
B)  Invention of tools to help with plowing and irrigation 
C)  Deaths from bubonic plague 
D)  The beginning of the agricultural revolution 
A)  Accidents from metal working 
B)  Invention of tools to help with plowing and irrigation 
C)  Deaths from bubonic plague 
D)  The beginning of the agricultural revolution

Question 11

When did the world population first reach 1 billion?

Accepted Answer

A)  1544 
B)  1825 
C)  1930 
D)  2019 
A)  1544 
B)  1825 
C)  1930 
D)  2019

Question 12

Refer to the figure.
  Based on the figure, which statement about Davidson and Andrewartha's experiment on thrips (Thrips imaginis) is true?

Accepted Answer

A)  Davidson and Andrewartha's model of thrips per rose was exactly the same as the observed numbers. 
B)  The predicted numbers closely resembled the observed numbers. 
C)  The observed numbers of thrips was always lower that the predicted model but showed the same general trends. 
D)  The predicted numbers model accurately reflected the observed numbers some years but in other years the predicted model was very different than the observed numbers of thrips. 
A)  Davidson and Andrewartha's model of thrips per rose was exactly the same as the observed numbers. 
B)  The predicted numbers closely resembled the observed numbers. 
C)  The observed numbers of thrips was always lower that the predicted model but showed the same general trends. 
D)  The predicted numbers model accurately reflected the observed numbers some years but in other years the predicted model was very different than the observed numbers of thrips.

Question 13

Life tables can be based on all of the following except

Accepted Answer

A)  ages of organisms. 
B)  life cycle stages of organisms. 
C)  sizes of organisms. 
D)  biogeographical locations of organisms. 
A)  ages of organisms. 
B)  life cycle stages of organisms. 
C)  sizes of organisms. 
D)  biogeographical locations of organisms.

Question 14

Refer to the table.
 
- The table shows the survivorship, fecundity, and life expectancies for U.S. females of various ages as of 2009. At which age was fecundity the highest in 2009?

Accepted Answer

A)  Age 20 
B)  Age 25 
C)  Age 30 
D)  Age 35 
A)  Age 20 
B)  Age 25 
C)  Age 30 
D)  Age 35

Question 15

Which population would be expected to remain stable in size?

Accepted Answer

A)  A population with an r of  0 
D)  A population with a F1F1F1S1$\lambda$F1F1F10 of 0 and an r of 1 
A)  A population with an r of  0 
D)  A population with a F1F1F1S1$\lambda$F1F1F10 of 0 and an r of 1

Question 16

You are studying a population of mice. The starting population size is 200 adults. Following reproduction, 10% of adults die. The birth rate is 15% and the emigration rate is 30%, but only very young individuals disperse. The population receives 44 immigrants, existing adults reproduce and then some die, and of the offspring that are produced some emigrate. What is the total population size following reproduction, death of adults, birth of young, emigration of young, and immigration of outsiders?

Accepted Answer

The answer of You are studying a population of mice....

Question 17

Which statement about population growth is true?

Accepted Answer

A)  Population growth can be exponential for only as long as environmental conditions are favorable. 
B)  Population growth of field samples always has a F1F1F1S1$\lambda$F1F1F10 of approximately 1. 
C)  Population growth models do not apply to humans. 
D)  Population growth can continue indefinitely. 
A)  Population growth can be exponential for only as long as environmental conditions are favorable. 
B)  Population growth of field samples always has a F1F1F1S1$\lambda$F1F1F10 of approximately 1. 
C)  Population growth models do not apply to humans. 
D)  Population growth can continue indefinitely.

Question 18

According to calculations done by Pearl and Reed in 1920, the carrying capacity of the United States is just under _______ million.

Accepted Answer

A)  100 
B)  150 
C)  200 
D)  300 
A)  100 
B)  150 
C)  200 
D)  300

Question 19

A frog pond contained 27 adults at the beginning of spring. During the summer, 4 immigrated from a neighboring pond, 12 emigrated during the summer drought, 3 were eaten by brim, and 42 tadpoles hatched. What is the current population size of frogs in the pond?

Accepted Answer

A)  27 
B)  42 
C)  58 
D)  74 
A)  27 
B)  42 
C)  58 
D)  74

Question 20

Suppose you are studying consumption patterns to determine how much land area would be required to support a certain population size, in terms of the number of tons of wheat produced by an area compared to the number of tons of wheat consumed by the people in that area. Based solely on wheat production and consumption, which area has the smallest ecological footprint?

Accepted Answer

A)  Area 1: 600 tons of wheat produced; 200 tons consumed 
B)  Area 2: 150 tons of wheat produced; 100 tons consumed 
C)  Area 3: 600 tons of wheat produced; 500 tons consumed 
D)  Area 4: 700 tons of wheat produced; 300 tons consumed 
A)  Area 1: 600 tons of wheat produced; 200 tons consumed 
B)  Area 2: 150 tons of wheat produced; 100 tons consumed 
C)  Area 3: 600 tons of wheat produced; 500 tons consumed 
D)  Area 4: 700 tons of wheat produced; 300 tons consumed

Exam 11: Population Growth and Regulation

Over the past 2,000 years, the overall human population has grown

You are asked to construct a life table for Species A, a nonreproductive shrub you have been studying for 3 years after a wildfire destroyed all the vegetation on your field site. What type of life table would you construct for this scenario? Why?

The total area of productive ecosystems required to support a particular individual or population is known as its

Refer to the table. -The table shows the survivorship, fecundity, and life expectancies for U.S. females of various ages as of 2009. At approximately which age were half the females still alive in 2009?

A population of rabbits reproduces in synchrony at discrete time periods each year. If the current population is 150 and its geometric population growth rate is 1.4 per year, the expected size of the population after two years will be

Which statement about Arcese and Smith's studies of the effects of population density on song sparrows is false?

Refer the figure. According to the figure, which loggerhead sea turtle group, when 50% protected by management practices, was estimated to produce a positive increase in survival growth rate?

Refer to the figure. Based on the data in the figure, what is the carrying capacity in this environment?

Refer to the figure. Which event lead to a substantial decrease in the human population?

When did the world population first reach 1 billion?

Refer to the figure. Based on the figure, which statement about Davidson and Andrewartha's experiment on thrips (Thrips imaginis) is true?

Life tables can be based on all of the following except

Refer to the table. - The table shows the survivorship, fecundity, and life expectancies for U.S. females of various ages as of 2009. At which age was fecundity the highest in 2009?

Which population would be expected to remain stable in size?

Which statement about population growth is true?

According to calculations done by Pearl and Reed in 1920, the carrying capacity of the United States is just under _______ million.

A frog pond contained 27 adults at the beginning of spring. During the summer, 4 immigrated from a neighboring pond, 12 emigrated during the summer drought, 3 were eaten by brim, and 42 tadpoles hatched. What is the current population size of frogs in the pond?

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Coping With Environmental Variation:

Coping With Environmental Variation: Energy

Evolution and Ecology

Life History

Behavioral Ecology

Population Distribution and Abundance

Population Dynamics

Predation

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Mutualism and Commensalism

The Nature of Communities

Change in Communities

Biogeography

Species Diversity in Communities

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Nutrient Supply and Cycling

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