CHP 19 - BSC 108 - Exam 4 Questions and
Answers (2026) | Comprehensive Review with
Detailed Rationales | A+ Verified
• What will be the approximate shape of the age-structure diagram of a rapidly
increasing population? -✓✓a pyramid
• According to the logistic growth model, the fastest growth rate of a population occurs
when __________. -✓✓the population size is at roughly half the carrying capacity of the
habitat
• The use of the Indian mongoose to control rat populations ________. -✓✓became a
disaster when the mongoose turned out to be as invasive as its target
• Human population growth __________. -✓✓has been exponential
• A non-native species that has spread far beyond the original point of introduction and
causes environmental or economic damage is called a(n) _____. -✓✓invasive species
• What is a characteristic of Type I survivorship curves? -✓✓Most individuals survive to
older age intervals
• An unexpected freeze that kills a population of chipmunks is an example of ________.
-✓✓a density-independent factor
• A combination of biological, chemical, and cultural methods for sustainable control of
agricultural pests is called __________. -✓✓integrated pest management (IPM)
• ________ are an example of an invasive species. -✓✓Burmese pythons
, • You arrive back in the United States after having visited a foreign country located on
another continent. The customs agent stops the person in front of you and confiscates
the fruit basket this person is bringing home. Being the knowledgeable person you are,
you calmly explain to your enraged fellow traveler that the reason for the detainment is
that the fruit basket may be ________. -✓✓carrying a non-native species that could
damage North American ecosystems
• If you have a population growth curve that shows a decrease in the growth rate as the
population size approaches carrying capacity, you would say that population is
exhibiting __________. -✓✓logistic population growth
• Age structures are helpful for predicting __________. -✓✓a population's future growth
• Competition among individuals of the same species for the same limited resources is
________ competition. -✓✓intraspecific
• Which option best describes Type II survivorship curves? -✓✓Survivorship is constant
over the lifespan.
• The Endangered Species Act aims to help protect species that ________. -✓✓are in
danger of extinction
• If a population's growth rate decreases as the population size approaches carrying
capacity, the population's growth follows a(n) ________ model. -✓✓logistic
• Organisms that show a Type I survivorship curve include __________ -✓✓organisms
that have few offspring but invest heavily in their care.
• An organism intentially released into a non-native habitat to combat a pest species is
termed a(n) _________. -✓✓biological control
Answers (2026) | Comprehensive Review with
Detailed Rationales | A+ Verified
• What will be the approximate shape of the age-structure diagram of a rapidly
increasing population? -✓✓a pyramid
• According to the logistic growth model, the fastest growth rate of a population occurs
when __________. -✓✓the population size is at roughly half the carrying capacity of the
habitat
• The use of the Indian mongoose to control rat populations ________. -✓✓became a
disaster when the mongoose turned out to be as invasive as its target
• Human population growth __________. -✓✓has been exponential
• A non-native species that has spread far beyond the original point of introduction and
causes environmental or economic damage is called a(n) _____. -✓✓invasive species
• What is a characteristic of Type I survivorship curves? -✓✓Most individuals survive to
older age intervals
• An unexpected freeze that kills a population of chipmunks is an example of ________.
-✓✓a density-independent factor
• A combination of biological, chemical, and cultural methods for sustainable control of
agricultural pests is called __________. -✓✓integrated pest management (IPM)
• ________ are an example of an invasive species. -✓✓Burmese pythons
, • You arrive back in the United States after having visited a foreign country located on
another continent. The customs agent stops the person in front of you and confiscates
the fruit basket this person is bringing home. Being the knowledgeable person you are,
you calmly explain to your enraged fellow traveler that the reason for the detainment is
that the fruit basket may be ________. -✓✓carrying a non-native species that could
damage North American ecosystems
• If you have a population growth curve that shows a decrease in the growth rate as the
population size approaches carrying capacity, you would say that population is
exhibiting __________. -✓✓logistic population growth
• Age structures are helpful for predicting __________. -✓✓a population's future growth
• Competition among individuals of the same species for the same limited resources is
________ competition. -✓✓intraspecific
• Which option best describes Type II survivorship curves? -✓✓Survivorship is constant
over the lifespan.
• The Endangered Species Act aims to help protect species that ________. -✓✓are in
danger of extinction
• If a population's growth rate decreases as the population size approaches carrying
capacity, the population's growth follows a(n) ________ model. -✓✓logistic
• Organisms that show a Type I survivorship curve include __________ -✓✓organisms
that have few offspring but invest heavily in their care.
• An organism intentially released into a non-native habitat to combat a pest species is
termed a(n) _________. -✓✓biological control
