Question 1

Which factor is a density-dependent regulator of population size?

Accepted Answer

A) drought 
B) flood 
C) hurricane 
D) disease 
A) drought 
B) flood 
C) hurricane 
D) disease

Question 2

Biologists captured and marked 100 butterflies. Later they captured 115 butterflies, 5 of which were marked. The population estimate is 2000 butterflies.

Accepted Answer

A) True 
 B)False

Question 3

Which term refers to distributions that tend to occur in populations in which individuals repel each other because resources are in short supply?

Accepted Answer

A) clumped 
B) random 
C) uniform 
D) unpredictable 
A) clumped 
B) random 
C) uniform 
D) unpredictable

Question 4

What phenotypic effects does crowding have on the migratory locust? How are these changes adaptive?

Accepted Answer

Migratory locusts can develop into eithe

Question 5

At which stage of a country's demographic transition do birth rates generally reach their highest point?

Accepted Answer

A) at the preindustrial stage 
B) at the transitional stage 
C) at the postindustrial stage 
D) at the industrial stage 
A) at the preindustrial stage 
B) at the transitional stage 
C) at the postindustrial stage 
D) at the industrial stage

Question 6

Sea turtles are likely to die when they are young, but if they reach a large size, they have a good chance of surviving. Which survivorship curve in the figure best fits sea turtles?

Accepted Answer

A) type I, shown in graph C 
B) type II, shown in graph B 
C) type III, shown in graph A 
D) type III, shown in graph C 
A) type I, shown in graph C 
B) type II, shown in graph B 
C) type III, shown in graph A 
D) type III, shown in graph C

Question 7

Use the list of terms to identify each lettered part of the illustration.  
-prereproductive

Accepted Answer

The answer of Use the list of terms to identify...

Question 8

In which species would the number of males least affect the rate of population growth?
a.in northern elephant seals
b.in Norwegian rats
c.in trumpeter swans
d.in Canada geese

Accepted Answer

The answer of In which species would the number of...

Question 9

Which of following factors is an intrinsic control to population growth?

Accepted Answer

A) increased volcanic eruptions 
B) increased dispersal 
C) increased predation 
D) humans 
A) increased volcanic eruptions 
B) increased dispersal 
C) increased predation 
D) humans

Question 10

Which sentence describes how basic ecology and applied ecology are different?

Accepted Answer

A) Basic ecology investigates populations, while applied ecology investigates ecosystems. 
B) Basic ecology investigates individual species, while applied ecology investigates food webs. 
C) Basic ecology investigates distribution and interaction of species, while applied ecology investigates conservation and mitigation of damage. 
D) Basic ecology investigates conservation and mitigation of damage, while applied ecology investigates distribution and interaction of species. 
A) Basic ecology investigates populations, while applied ecology investigates ecosystems. 
B) Basic ecology investigates individual species, while applied ecology investigates food webs. 
C) Basic ecology investigates distribution and interaction of species, while applied ecology investigates conservation and mitigation of damage. 
D) Basic ecology investigates conservation and mitigation of damage, while applied ecology investigates distribution and interaction of species.

Question 11

Match each statement with the most appropriate survivorship curve.
-low mortality rate

Accepted Answer

A) type I 
B) type II 
C) type III 
A) type I 
B) type II 
C) type III

Question 12

Suppose that a population of 100 animals in logarithmic growth has rmax = 0.4 and K = 102. Also suppose that r = rmax(K - N)/K. What is the value of r?

Accepted Answer

A) 0.792 
B) 0.580 
C) 0.078 
D) 0.0078 
A) 0.792 
B) 0.580 
C) 0.078 
D) 0.0078

Question 13

Match each term with its definition.
-exponential population growth

Accepted Answer

A) population increasing steadily by a constant ratio 
B) average number of offspring produced by females during each age interval 
C) population growth slowing as population approaches K 
D) number of individuals per unit area or unit volume 
E) movement out of a population 
A) population increasing steadily by a constant ratio 
B) average number of offspring produced by females during each age interval 
C) population growth slowing as population approaches K 
D) number of individuals per unit area or unit volume 
E) movement out of a population

Question 14

Which trait is characteristic of a K-selected species?

Accepted Answer

A) It is not adapted to rapidly changing environments. 
B) It usually has a single reproductive event. 
C) It provides substantial parental care to offspring. 
D) It has a small size of offspring. 
A) It is not adapted to rapidly changing environments. 
B) It usually has a single reproductive event. 
C) It provides substantial parental care to offspring. 
D) It has a small size of offspring.

Question 15

Match each statement with the most appropriate survivorship curve.
-long life span

Accepted Answer

A) type I 
B) type II 
C) type III 
A) type I 
B) type II 
C) type III

Question 16

What characteristics are consistent with a K-selected species? Where do humans fall on the r through K continuum?

Accepted Answer

K-selected species tend to have larger b

Question 17

Match each statement with the most appropriate survivorship curve.
-one reproductive episode

Accepted Answer

A) type I 
B) type II 
C) type III 
A) type I 
B) type II 
C) type III

Question 18

Match each statement with the most appropriate survivorship curve.
-fluctuating population size

Accepted Answer

A) type I 
B) type II 
C) type III 
A) type I 
B) type II 
C) type III

Question 19

Use the list of terms to identify each lettered part of the illustration.  
-zero growth

Accepted Answer

The answer of Use the list of terms to identify...

Question 20

Parasitism is a density-independent factor of population control.

Accepted Answer

A) True 
 B)False

Exam 29: Population Ecology

Which factor is a density-dependent regulator of population size?

Biologists captured and marked 100 butterflies. Later they captured 115 butterflies, 5 of which were marked. The population estimate is 2000 butterflies.

Which term refers to distributions that tend to occur in populations in which individuals repel each other because resources are in short supply?

What phenotypic effects does crowding have on the migratory locust? How are these changes adaptive?

At which stage of a country's demographic transition do birth rates generally reach their highest point?

Sea turtles are likely to die when they are young, but if they reach a large size, they have a good chance of surviving. Which survivorship curve in the figure best fits sea turtles?

Use the list of terms to identify each lettered part of the illustration. -prereproductive

In which species would the number of males least affect the rate of population growth? a.in northern elephant seals b.in Norwegian rats c.in trumpeter swans d.in Canada geese

Which of following factors is an intrinsic control to population growth?

Which sentence describes how basic ecology and applied ecology are different?

Match each statement with the most appropriate survivorship curve. -low mortality rate

Suppose that a population of 100 animals in logarithmic growth has rmax = 0.4 and K = 102. Also suppose that r = rmax(K - N)/K. What is the value of r?

Match each term with its definition. -exponential population growth

Which trait is characteristic of a K-selected species?

Match each statement with the most appropriate survivorship curve. -long life span

What characteristics are consistent with a K-selected species? Where do humans fall on the r through K continuum?

Match each statement with the most appropriate survivorship curve. -one reproductive episode

Match each statement with the most appropriate survivorship curve. -fluctuating population size

Use the list of terms to identify each lettered part of the illustration. -zero growth

Parasitism is a density-independent factor of population control.

Light and Life

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Structure and Expression

Control of Gene Expression

Dna Technologies

Genomes and Proteomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Species and Macroevolution

Understanding the History of Life on Earth

Humans and Evolution

Bacteria and Archaea

Viruses, Viroids, and Prions: Infectious Biological Particles

Protists

Fungi

Plants

Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

Diversity of Animals 2: Deuterostomes: Vertebrates and Their Closest Relatives

Population Interactions and Community Ecology

Ecosystems

Conservation of Biodiversity

Putting Selection to Work

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Transport in Animals: the Circulatory System

Reproduction in Animals

Animal Development

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Integration

Muscles, Skeletons, and Body Movements

Animal Behaviour

Animal Nutrition

Gas Exchange: the Respiratory System

Regulating the Internal Environment

Defences Against Disease

Conservation and Evolutionary Physiology

Filters

Suppose that a population of 100 animals in logarithmic growth has r_max = 0.4 and K = 102. Also suppose that r = r_max(K - N)/K. What is the value of r?