Question 1

A density- dependent factor is an example of a negative feedback system.

Accepted Answer

A) True 
 B)False

Question 2

The largest population that can be maintained in an environment for an indefinite period of time is called the carrying capacity .

Accepted Answer

A) True 
 B)False

Question 3

The growth rate of a population is expressed as:

Accepted Answer

A)  b − d . 
B)  i − e . 
C)  K − N . 
D)  dN / r . 
E)  ( K − N ) / K . 
A)  b − d . 
B)  i − e . 
C)  K − N . 
D)  dN / r . 
E)  ( K − N ) / K .

Question 4

Tawny owls (Strix aluco) pair-bond for life, with both members of a pair living and hunting in adjacent, well-defined territories. Their reproduction is regulated in accordance with the resources, especially the food supply, present in their territories. Tawny owls can best described as:

Accepted Answer

A)  r strategists. 
B)  K strategists. 
C)  fecundists. 
D)  life historists. 
E)  scramblers. 
A)  r strategists. 
B)  K strategists. 
C)  fecundists. 
D)  life historists. 
E)  scramblers.

Question 5

____ is the least frequent of the dispersal patterns seen in nature.

Accepted Answer

A)  Random dispersion 
B)  Aggregated distribution 
C)  Uniform dispersion 
D)  Density-dependent distribution 
E)  Clumped dispersion 
A)  Random dispersion 
B)  Aggregated distribution 
C)  Uniform dispersion 
D)  Density-dependent distribution 
E)  Clumped dispersion

Question 6

Which of the following relationships is incorrectly paired?

Accepted Answer

A)  schooling fish − aggregated distribution 
B)  nesting seabirds − random dispersion 
C)  grove of aspen − clumped dispersion 
D)  flour beetle larvae − random dispersion 
E)  adult sand pine − uniform dispersion 
A)  schooling fish − aggregated distribution 
B)  nesting seabirds − random dispersion 
C)  grove of aspen − clumped dispersion 
D)  flour beetle larvae − random dispersion 
E)  adult sand pine − uniform dispersion

Question 7

Populations that experience significant contest competition:

Accepted Answer

A)  show small changes in population size over time. 
B)  show great changes in population size over time. 
C)  are particularly susceptible to extinction. 
D)  show little intraspecific competition. 
E)  are characteristic of environments with abundant resources. 
A)  show small changes in population size over time. 
B)  show great changes in population size over time. 
C)  are particularly susceptible to extinction. 
D)  show little intraspecific competition. 
E)  are characteristic of environments with abundant resources.

Question 8

Match between columns
                        Premises: also known as scramble competition
also known as contest competition
individuals share limited resources equally
dominant individuals obtain limited resources at the expense of others

Accepted Answer

The Answer of exploitation competition and interference competition is...

Question 9

What is a typical feature of K -selected organisms?

Accepted Answer

A)  early reproduction 
B)  fast development 
C)  a low reproductive rate 
D)  small body size 
E)  little parental care of offspring 
A)  early reproduction 
B)  fast development 
C)  a low reproductive rate 
D)  small body size 
E)  little parental care of offspring

Question 10

The moose population on Isle Royale is an example of:

Accepted Answer

A)  interspecific exploitation competition. 
B)  intraspecific exploitation competition. 
C)  interspecific contest competition. 
D)  intraspecific contest competition. 
E)  both intraspecific contest competition and scramble competition. 
A)  interspecific exploitation competition. 
B)  intraspecific exploitation competition. 
C)  interspecific contest competition. 
D)  intraspecific contest competition. 
E)  both intraspecific contest competition and scramble competition.

Question 11

Natural selection acts most directly on:

Accepted Answer

A)  populations. 
B)  communities. 
C)  ecosystems. 
D)  the biosphere. 
E)  K- selected organisms. 
A)  populations. 
B)  communities. 
C)  ecosystems. 
D)  the biosphere. 
E)  K- selected organisms.

Question 12

Density-independent factors:

Accepted Answer

A)  influence population size and are in turn influenced by changes in population density. 
B)  may be the result of intense interspecific competition. 
C)  are typically abiotic. 
D)  may include parasites. 
E)  may include diseases. 
A)  influence population size and are in turn influenced by changes in population density. 
B)  may be the result of intense interspecific competition. 
C)  are typically abiotic. 
D)  may include parasites. 
E)  may include diseases.

Question 13

When r = − 0.00057, the population size:

Accepted Answer

A)  will increase. 
B)  will decrease. 
C)  is stable. 
D)  may increase or decrease, depending on K . 
E)  may increase or decrease, depending on i . 
A)  will increase. 
B)  will decrease. 
C)  is stable. 
D)  may increase or decrease, depending on K . 
E)  may increase or decrease, depending on i .

Question 14

In Type-I survivorship, the young have a high probability of surviving.

Accepted Answer

A) True 
 B)False

Question 15

K strategists typically produce large numbers of offspring.

Accepted Answer

A) True 
 B)False

Question 16

Which set of values would result in a population with a growth rate of zero?

Accepted Answer

A)  b = 1000, d = 500, i = 750, e = 1000 
B)  b = 1000, d = 500, i = 1000, e = 1000 
C)  b = 1000, d = 500, i = 1500, e = 1000 
D)  b = 1000, d = 500, i = 0, e = 1000 
E)  b = 1000, d = 500, i = 500, e = 1000 
A)  b = 1000, d = 500, i = 750, e = 1000 
B)  b = 1000, d = 500, i = 1000, e = 1000 
C)  b = 1000, d = 500, i = 1500, e = 1000 
D)  b = 1000, d = 500, i = 0, e = 1000 
E)  b = 1000, d = 500, i = 500, e = 1000

Question 17

Figure 53-1   The graph in the accompanying figure would best be described as:

Accepted Answer

A)  being characteristic of exponential growth. 
B)  being characteristic of arithmetic growth. 
C)  an S-shaped curve. 
D)  a J-shaped curve. 
E)  being a J-shaped curve characteristic of exponential growth. 
A)  being characteristic of exponential growth. 
B)  being characteristic of arithmetic growth. 
C)  an S-shaped curve. 
D)  a J-shaped curve. 
E)  being a J-shaped curve characteristic of exponential growth.

Question 18

Using the demographic terms presented in this chapter, compare and contrast the populations of highly developed and less developed countries.

Accepted Answer

Concepts to Consider: Highly developed c

Question 19

Biologists in which of the following applied disciplines must understand population ecology?

Accepted Answer

A)  forestry 
B)  agronomy 
C)  wildlife management 
D)  forestry and agronomy 
E)  forestry, agronomy, and wildlife management 
A)  forestry 
B)  agronomy 
C)  wildlife management 
D)  forestry and agronomy 
E)  forestry, agronomy, and wildlife management

Question 20

A human population that is shrinking would be characterized by a(n):

Accepted Answer

A)  large proportion of prereproductive individuals. 
B)  small proportion of prereproductive individuals. 
C)  large proportion of reproductive individuals. 
D)  equal number of individuals of all age groups. 
E)  small proportion of postreproductive individuals. 
A)  large proportion of prereproductive individuals. 
B)  small proportion of prereproductive individuals. 
C)  large proportion of reproductive individuals. 
D)  equal number of individuals of all age groups. 
E)  small proportion of postreproductive individuals.

Exam 53: Introduction to Ecology Population Ecology

A density- dependent factor is an example of a negative feedback system.

The largest population that can be maintained in an environment for an indefinite period of time is called the carrying capacity .

The growth rate of a population is expressed as:

Tawny owls (Strix aluco) pair-bond for life, with both members of a pair living and hunting in adjacent, well-defined territories. Their reproduction is regulated in accordance with the resources, especially the food supply, present in their territories. Tawny owls can best described as:

____ is the least frequent of the dispersal patterns seen in nature.

Which of the following relationships is incorrectly paired?

Populations that experience significant contest competition:

What is a typical feature of K -selected organisms?

The moose population on Isle Royale is an example of:

Natural selection acts most directly on:

Density-independent factors:

When r = − 0.00057, the population size:

In Type-I survivorship, the young have a high probability of surviving.

K strategists typically produce large numbers of offspring.

Which set of values would result in a population with a growth rate of zero?

Figure 53-1 The graph in the accompanying figure would best be described as:

Using the demographic terms presented in this chapter, compare and contrast the populations of highly developed and less developed countries.

Biologists in which of the following applied disciplines must understand population ecology?

A human population that is shrinking would be characterized by a(n):

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Photosynthesis Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

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