Question 1

The total number of individuals in a population is the population

Accepted Answer

A) distribution. 
B) growth. 
C) birth rate. 
D) size. 
E) age structure. 
A) distribution. 
B) growth. 
C) birth rate. 
D) size. 
E) age structure.

Question 2

Which of the following provides a chicken rancher using a free-roaming arrangement for his flock the data necessary to ensure maximum survival of his hens?

Accepted Answer

A) distribution of chickens throughout the range 
B) total number of chickens 
C) chickens per square foot of the range 
D) total square footage of the range 
E) crude density of the chicken population 
A) distribution of chickens throughout the range 
B) total number of chickens 
C) chickens per square foot of the range 
D) total square footage of the range 
E) crude density of the chicken population

Question 3

The net reproduction per individual per unit time (r) is __________ per mouse per month in a population of 1,000 mice where 500 mice are born and 400 mice die monthly.

Accepted Answer

A) 0.1 
B) 0.2 
C) 0.3 
D) 0.4 
E) 0.5 
A) 0.1 
B) 0.2 
C) 0.3 
D) 0.4 
E) 0.5

Question 4

A type III survivorship curve is characteristic of

Accepted Answer

A) cattle. 
B) horses. 
C) eagles. 
D) sea urchins. 
E) humans. 
A) cattle. 
B) horses. 
C) eagles. 
D) sea urchins. 
E) humans.

Question 5

Random dispersion of individuals in a population occurs when habitat conditions are __________, resource availability is __________, and individuals or pairs of individuals __________ one another.

Accepted Answer

A) random; scarce; either attract or avoid 
B) clumped; fairly steady; neither attract nor avoid 
C) nearly uniform; random; neither attract nor avoid 
D) nearly uniform; fairly steady; neither attract nor avoid 
E) clumped; scarce; either attract or avoid 
A) random; scarce; either attract or avoid 
B) clumped; fairly steady; neither attract nor avoid 
C) nearly uniform; random; neither attract nor avoid 
D) nearly uniform; fairly steady; neither attract nor avoid 
E) clumped; scarce; either attract or avoid

Question 6

Populations

Accepted Answer

A) are only limited by one factor at a time. 
B) increase arithmetically. 
C) may increase indefinitely. 
D) are limited by the carrying capacity. 
E) overcome limiting factors by increasing their biotic potential. 
A) are only limited by one factor at a time. 
B) increase arithmetically. 
C) may increase indefinitely. 
D) are limited by the carrying capacity. 
E) overcome limiting factors by increasing their biotic potential.

Question 7

The carrying capacity of an environment is determined by the

Accepted Answer

A) net rate of reproduction of the female members of the population. 
B) population's logistic growth. 
C) number of reproductively capable individuals in the population. 
D) population's biotic potential. 
E) sustainable supply of resources it provides. 
A) net rate of reproduction of the female members of the population. 
B) population's logistic growth. 
C) number of reproductively capable individuals in the population. 
D) population's biotic potential. 
E) sustainable supply of resources it provides.

Question 8

Which of the following is NOT true regarding population counts?

Accepted Answer

A) A full population count is usually impractical. 
B) Ecologists estimate a population's total density from a sample of the population. 
C) Sampling within quadrats is particularly useful for most populations of migrating animals. 
D) A full population count is possible for large animals in small areas. 
E) Capture-recapture methods are used to estimate the population's size of species that do not "stay put." 
A) A full population count is usually impractical. 
B) Ecologists estimate a population's total density from a sample of the population. 
C) Sampling within quadrats is particularly useful for most populations of migrating animals. 
D) A full population count is possible for large animals in small areas. 
E) Capture-recapture methods are used to estimate the population's size of species that do not "stay put."

Question 9

In 1440, there were approximately how many people living on Easter Island?

Accepted Answer

A) 1 million 
B) 95,000 
C) 15,000 
D) a few hundred 
E) none of these 
A) 1 million 
B) 95,000 
C) 15,000 
D) a few hundred 
E) none of these

Question 10

Individuals in the population grouped according to levels of maturity define the population's

Accepted Answer

A) carrying capacity. 
B) age structure 
C) density. 
D) size. 
E) birth rate. 
A) carrying capacity. 
B) age structure 
C) density. 
D) size. 
E) birth rate.

Question 11

What concept is used to express the growth rate of a given population?

Accepted Answer

A) doubling time 
B) population density 
C) population size 
D) carrying capacity 
E) biotic potential 
A) doubling time 
B) population density 
C) population size 
D) carrying capacity 
E) biotic potential

Question 12

The distribution of the human population in the United States is

Accepted Answer

A) clumped. 
B) random. 
C) uniform. 
D) constant. 
E) homogeneous. 
A) clumped. 
B) random. 
C) uniform. 
D) constant. 
E) homogeneous.

Question 13

Which of the following is NOT involved in capture-recapture methods of population sampling?

Accepted Answer

A) DNA fingerprinting 
B) tags 
C) collars 
D) leg rings 
E) wing markers 
A) DNA fingerprinting 
B) tags 
C) collars 
D) leg rings 
E) wing markers

Question 14

When the birth rate plus immigration equals the death rate plus emigration the result is

Accepted Answer

A) logistic growth. 
B) exponential growth. 
C) population saturation. 
D) zero population growth. 
E) geometric growth. 
A) logistic growth. 
B) exponential growth. 
C) population saturation. 
D) zero population growth. 
E) geometric growth.

Question 15

Questions refer to the figure above illustrating logistic growth.
  
-The initial carrying capacity of an environment is indicated by

Accepted Answer

A) A. 
B) B. 
C) C. 
D) D. 
E) E. 
A) A. 
B) B. 
C) C. 
D) D. 
E) E.

Question 16

The distribution of individuals in a school of fish is likely to be

Accepted Answer

A) clumped. 
B) random. 
C) uniform. 
D) constant. 
E) homogeneous. 
A) clumped. 
B) random. 
C) uniform. 
D) constant. 
E) homogeneous.

Question 17

Zero population growth is achieved

Accepted Answer

A) when a population reaches the carrying capacity of the environment. 
B) when emigration and immigration are balanced, and the number of births equals the number of deaths. 
C) anytime that births exceed deaths. 
D) anytime that deaths exceed births. 
E) when emigration and immigration are prevented. 
A) when a population reaches the carrying capacity of the environment. 
B) when emigration and immigration are balanced, and the number of births equals the number of deaths. 
C) anytime that births exceed deaths. 
D) anytime that deaths exceed births. 
E) when emigration and immigration are prevented.

Question 18

Type II survivorship curves

Accepted Answer

A) are characteristic of humans and elephants. 
B) indicate a fairly constant rate of death at all ages. 
C) indicate a high mortality rate in the very young. 
D) are characteristic of species in which most individuals live a relatively long life and die of old age. 
E) are typical of species with high biotic potentials. 
A) are characteristic of humans and elephants. 
B) indicate a fairly constant rate of death at all ages. 
C) indicate a high mortality rate in the very young. 
D) are characteristic of species in which most individuals live a relatively long life and die of old age. 
E) are typical of species with high biotic potentials.

Question 19

Killifish and pike-cichlids raised in natural conditions will

Accepted Answer

A) affect the age at first reproduction of the guppies that live with them. 
B) prey on guppies. 
C) affect the growth rate of guppies. 
D) affect the evolution of the guppies' life history traits. 
E) do all of these. 
A) affect the age at first reproduction of the guppies that live with them. 
B) prey on guppies. 
C) affect the growth rate of guppies. 
D) affect the evolution of the guppies' life history traits. 
E) do all of these.

Question 20

In 1722, a European explorer found __________ people on "Easter Island," starving and huddled in caves.

Accepted Answer

A) a few hundred 
B) a few thousand 
C) about 1 million 
D) less than a dozen 
E) none of these 
A) a few hundred 
B) a few thousand 
C) about 1 million 
D) less than a dozen 
E) none of these

Exam 45: Population Ecology

The total number of individuals in a population is the population

Which of the following provides a chicken rancher using a free-roaming arrangement for his flock the data necessary to ensure maximum survival of his hens?

The net reproduction per individual per unit time (r) is __________ per mouse per month in a population of 1,000 mice where 500 mice are born and 400 mice die monthly.

A type III survivorship curve is characteristic of

Random dispersion of individuals in a population occurs when habitat conditions are __________, resource availability is __________, and individuals or pairs of individuals __________ one another.

Populations

The carrying capacity of an environment is determined by the

Which of the following is NOT true regarding population counts?

In 1440, there were approximately how many people living on Easter Island?

Individuals in the population grouped according to levels of maturity define the population's

What concept is used to express the growth rate of a given population?

The distribution of the human population in the United States is

Which of the following is NOT involved in capture-recapture methods of population sampling?

When the birth rate plus immigration equals the death rate plus emigration the result is

Questions refer to the figure above illustrating logistic growth. -The initial carrying capacity of an environment is indicated by

The distribution of individuals in a school of fish is likely to be

Zero population growth is achieved

Type II survivorship curves

Killifish and pike-cichlids raised in natural conditions will

In 1722, a European explorer found __________ people on "Easter Island," starving and huddled in caves.

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters

Random dispersion of individuals in a population occurs when habitat conditions are , resource availability is , and individuals or pairs of individuals __ one another.