Question 1

One lesson biologists have learned from nature is that everything is connected to and interdependent with everything else.

Accepted Answer

A) True 
 B)False

Question 2

Which statement does NOT apply to whooping cranes?

Accepted Answer

A)  As of 2006, just over 330 individuals existed in the wild. 
B)  One population resides in Canada's Wood Buffalo National Park during the summer. 
C)  Hunting, egg collection, and habitat loss took tolls on the population. 
D)  All whooping cranes are migratory. 
A)  As of 2006, just over 330 individuals existed in the wild. 
B)  One population resides in Canada's Wood Buffalo National Park during the summer. 
C)  Hunting, egg collection, and habitat loss took tolls on the population. 
D)  All whooping cranes are migratory.

Question 3

The human population is likely to continue increasing at exponential rates indefinitely because of advances in our technology.

Accepted Answer

A) True 
 B)False

Question 4

Which letter has the shape of a logistic growth curve that depicts a population limited by a definite carrying capacity?

Accepted Answer

A)  S 
B)  L 
C)  J 
D)  M 
A)  S 
B)  L 
C)  J 
D)  M

Question 5

SHEEP
  
-Which letter in the graph corresponds to the portion of the curve that results from reproductive time lag?

Accepted Answer

The answer of SHEEP
  
-Which letter in the graph...

Question 6

Populations which have individuals evenly spaced throughout the environment have a(n)____________________ dispersal pattern.

Accepted Answer

The answer of Populations which have individuals evenly spaced throughout...

Question 7

Which factor leads to an increase in biotic potential?

Accepted Answer

A)  too much or too little light 
B)  too many competitors 
C)  an optimal level of critical nutrients 
D)  a low reproductive rate 
A)  too much or too little light 
B)  too many competitors 
C)  an optimal level of critical nutrients 
D)  a low reproductive rate

Question 8

Many large mammal species that have long generation times and low reproductive rates are prone to ____________________.

Accepted Answer

The answer of Many large mammal species that have long...

Question 9

A population's ____________________ structure can have a strong effect on how rapidly its size increases or decreases.

Accepted Answer

The answer of A population's ____________________ structure can have a...

Question 10

How have humans extended Earth's carrying capacity for the human species?

Accepted Answer

A)  by controlling many diseases 
B)  by using material resources at a sustainable rate 
C)  by decreasing life span 
D)  by using energy resources at a reduced rate 
A)  by controlling many diseases 
B)  by using material resources at a sustainable rate 
C)  by decreasing life span 
D)  by using energy resources at a reduced rate

Question 11

Metapopulations are spatially separated populations that may continue to exchange genes with each other through dispersal of individuals.

Accepted Answer

A) True 
 B)False

Question 12

When does a population crash occur?

Accepted Answer

A)  It occurs when a population overshoots carrying capacity, and environmental pressures lead to negative effects. 
B)  It occurs when a population approaches its carrying capacity. 
C)  It occurs when environmental resistance comes into play gradually. 
D)  It occurs when resources are essentially unlimited. 
A)  It occurs when a population overshoots carrying capacity, and environmental pressures lead to negative effects. 
B)  It occurs when a population approaches its carrying capacity. 
C)  It occurs when environmental resistance comes into play gradually. 
D)  It occurs when resources are essentially unlimited.

Question 13

POPULATION
  
-Which letter in the diagram corresponds to the point at which resources are not limiting and a population can grow at its intrinsic rate of increase?

Accepted Answer

The answer of POPULATION
  
-Which letter in the diagram...

Question 14

A species whose population size fluctuates slightly above and below its carrying capacity is said to have a fairly ____________________ population size.

Accepted Answer

The answer of A species whose population size fluctuates slightly...

Question 15

Which connections would likely occur among population cycles,survival strategies,and survivorship curves?

Accepted Answer

A)  boom-and-bust; r-selected species; early loss 
B)  stable; K-selected species; early loss 
C)  stable; r-selected species; early loss 
D)  boom-and-bust; K-selected species; early loss 
A)  boom-and-bust; r-selected species; early loss 
B)  stable; K-selected species; early loss 
C)  stable; r-selected species; early loss 
D)  boom-and-bust; K-selected species; early loss

Question 16

A mammal reaches maturity after 10 years and bears only one or two young every two years.The parents and the rest of the herd protect the young.The type of survivorship curve that this animal would have is a(n)_________________________ curve.

Accepted Answer

The answer of A mammal reaches maturity after 10 years...

Question 17

Why is the giant panda an endangered species?

Accepted Answer

A)  It has a low birth rate and small litter size. 
B)  Its mating rituals are so complex that it rarely mates. 
C)  It has a large litter size but a high death rate because of predation. 
D)  It is a generalized species that eats only evergreen leaves. 
A)  It has a low birth rate and small litter size. 
B)  Its mating rituals are so complex that it rarely mates. 
C)  It has a large litter size but a high death rate because of predation. 
D)  It is a generalized species that eats only evergreen leaves.

Question 18

The biotic potential and the population size modified by the environmental resistance determine the _________________________.

Accepted Answer

The answer of The biotic potential and the population size...

Question 19

All K-selected species have fewer,larger offspring than most other species.

Accepted Answer

A) True 
 B)False

Question 20

What is a typical means by which humans interfere in the development of natural ecosystems?

Accepted Answer

A)  by adding large predators to control other predators 
B)  by under harvesting renewable resources 
C)  by eliminating predators and introducing new species 
D)  by increasing the number of species through simplifying ecosystems 
A)  by adding large predators to control other predators 
B)  by under harvesting renewable resources 
C)  by eliminating predators and introducing new species 
D)  by increasing the number of species through simplifying ecosystems

Exam 9: Population Ecology

One lesson biologists have learned from nature is that everything is connected to and interdependent with everything else.

Which statement does NOT apply to whooping cranes?

The human population is likely to continue increasing at exponential rates indefinitely because of advances in our technology.

Which letter has the shape of a logistic growth curve that depicts a population limited by a definite carrying capacity?

SHEEP -Which letter in the graph corresponds to the portion of the curve that results from reproductive time lag?

Populations which have individuals evenly spaced throughout the environment have a(n)____________________ dispersal pattern.

Which factor leads to an increase in biotic potential?

Many large mammal species that have long generation times and low reproductive rates are prone to ____________________.

A population's ____________________ structure can have a strong effect on how rapidly its size increases or decreases.

How have humans extended Earth's carrying capacity for the human species?

Metapopulations are spatially separated populations that may continue to exchange genes with each other through dispersal of individuals.

When does a population crash occur?

POPULATION -Which letter in the diagram corresponds to the point at which resources are not limiting and a population can grow at its intrinsic rate of increase?

A species whose population size fluctuates slightly above and below its carrying capacity is said to have a fairly ____________________ population size.

Which connections would likely occur among population cycles,survival strategies,and survivorship curves?

A mammal reaches maturity after 10 years and bears only one or two young every two years.The parents and the rest of the herd protect the young.The type of survivorship curve that this animal would have is a(n)_________________________ curve.

Why is the giant panda an endangered species?

The biotic potential and the population size modified by the environmental resistance determine the _________________________.

All K-selected species have fewer,larger offspring than most other species.

What is a typical means by which humans interfere in the development of natural ecosystems?

Environmental Problems: an Introduction and Overview

Environmental History: Learning From the Past

Science, systems, matter, and Energy

Ecosystems: What Are They, and How Do They Work

Evolution and Biodiversity

Climate and Terrestrial Biodiversity

Aquatic Biodiversity

Community Ecology

Applying Population Ecology: the Human Population

Sustaining Terrestrial Biodiversity: Managing and Protecting Ecosystems

Sustaining Biodiversity: the Species Approach

Sustaining Aquatic Biodiversity

Food and Soil Resources

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy Resources

Energy Efficiency and Renewable Energy

Risk,toxicology,and Human Health

Air Pollution

Climate Change and Ozone Loss

Water Pollution

Pest Management

Solid and Hazardous Waste

Sustainable Cities

Economics, environment, and Sustainability

Politics, environment, and Sustainability

Environmental World-views, ethics, and Sustainability

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