EVR1001 EXAM 3 | (LATEST EXAM 2025) QUESTIONS AND CORRECT ANSWERS |
ALREADY GRADED A+ | VERIFIED ANSWERS
Contrary to popular belief, the Endangered Species Act allows ________. - (Correct Answer)-
landowners to harm a protected species in one area if they improve habitat for it elsewhere
European rabbits were introduced into Australia and quickly spread, reproduced, and became a
terrible pest. They eat up to $600 million worth of food and pasture crops annually and have
damaged the populations of many native plants and the populations of animals that eat the plants.
Twice in the past 50 years, rabbit diseases have been introduced to try to control the population,
with some success. This is a case where ________. - (Correct Answer)-an invasive species has
reduced the genetic diversity of native species
____________ became the first species listed under the Endangered Species Act as a result of
climate change. - (Correct Answer)-The Polar bear
A __________ is a distinct type of organism, a set of individuals that uniquely share certain
characteristics and can breed with one another and produce fertile offspring. - (Correct
Answer)-species
___________ is defined as the variety of life across all levels of biological organization. -
(Correct Answer)-biodiversity
______________ occurs when the last individual of a given species dies, and the species ceases
to exist. - (Correct Answer)-extiniction
When a species disappears from an area it once occupied, but the species still exists elsewhere,
this is called ____________ . - (Correct Answer)-extripation
The number or variety of species in a given region is called __________ . - (Correct Answer)-
species diversity
, 2
Populations with very little _______________ are vulnerable to environmental change because
they may lack the ability to adapt to different conditions - (Correct Answer)-genetic diversity
Which of the following types of species would be most vulnerable to overharvesting by people? -
(Correct Answer)-Elephants
Which of the following statements about the importance of organisms in an ecosystem is true? -
(Correct Answer)-"Ecosystem engineers" can be as important as keystone species for the
survival of the ecosystem.
Maria loves to be outdoors. She hikes every day in the woods, near the home that she shares with
five pets. Maria's lifestyle provides evidence of __________. - (Correct Answer)-biophilia
Species richness is the __________. - (Correct Answer)-number of species in an area
Endemic species are ________. - (Correct Answer)-limited to just one location, such as an
island
A large flock of endemic birds is discovered on a remote island. There appears to be two similar
but different kinds of birds within the flock. Which of the following information is most
important in deciding whether the two kinds of birds belong to a single species? - (Correct
Answer)-whether the matings between kinds produce viable offspring
Which of the following is an example of the single greatest cause of species extinction? -
(Correct Answer)-habitat fragmentation caused by building a road through a forest
In his 2005 book, Last Child in the Woods, Richard Louv maintains that today's children
________. - (Correct Answer)-suffer psychologically and emotionally from "nature deficit
syndrome"
, 3
A migratory bat species pollinates agave plants in northern Mexico on its way to the
southwestern United States where it spends the summer eating insects and reproducing. Farmers
spraying pesticides affect these bats, which eat the insects and also feed them to the baby bats.
This could be the start of a story about ________. - (Correct Answer)-threats to a keystone
species
Which of the following would be the most reasonable estimate of the number of species on the
planet? - (Correct Answer)-14 million
What is the second greatest cause of decline for threatened species? - (Correct Answer)-
pollution
Which of these statements is supported by the graph? Select all that apply. - (Correct Answer)-
Habitat loss is the greatest known cause of amphibian decline.
Which of the following best describes a biodiversity "hotspot"? - (Correct Answer)-A hotspot is
a region where species diversity is high but threatened by habitat loss.
Which of the following statements about cloning organisms is true? - (Correct Answer)-
Producing cloned animals and keeping them in zoos does not increase biodiversity of the
species.
Bullfrog tadpoles are often sold as fish bait, even in areas where they do not occur naturally.
When people buy 10 of them and don't use them all, they often dump the remainder into the lake
or river. This is an example of ________. - (Correct Answer)-an introduced species
More species have been identified and classified in this group than in any other. - (Correct
Answer)-Insects
Overall, how many studies showed a positive effect of organic farming on biodiversity? -
(Correct Answer)-66
ALREADY GRADED A+ | VERIFIED ANSWERS
Contrary to popular belief, the Endangered Species Act allows ________. - (Correct Answer)-
landowners to harm a protected species in one area if they improve habitat for it elsewhere
European rabbits were introduced into Australia and quickly spread, reproduced, and became a
terrible pest. They eat up to $600 million worth of food and pasture crops annually and have
damaged the populations of many native plants and the populations of animals that eat the plants.
Twice in the past 50 years, rabbit diseases have been introduced to try to control the population,
with some success. This is a case where ________. - (Correct Answer)-an invasive species has
reduced the genetic diversity of native species
____________ became the first species listed under the Endangered Species Act as a result of
climate change. - (Correct Answer)-The Polar bear
A __________ is a distinct type of organism, a set of individuals that uniquely share certain
characteristics and can breed with one another and produce fertile offspring. - (Correct
Answer)-species
___________ is defined as the variety of life across all levels of biological organization. -
(Correct Answer)-biodiversity
______________ occurs when the last individual of a given species dies, and the species ceases
to exist. - (Correct Answer)-extiniction
When a species disappears from an area it once occupied, but the species still exists elsewhere,
this is called ____________ . - (Correct Answer)-extripation
The number or variety of species in a given region is called __________ . - (Correct Answer)-
species diversity
, 2
Populations with very little _______________ are vulnerable to environmental change because
they may lack the ability to adapt to different conditions - (Correct Answer)-genetic diversity
Which of the following types of species would be most vulnerable to overharvesting by people? -
(Correct Answer)-Elephants
Which of the following statements about the importance of organisms in an ecosystem is true? -
(Correct Answer)-"Ecosystem engineers" can be as important as keystone species for the
survival of the ecosystem.
Maria loves to be outdoors. She hikes every day in the woods, near the home that she shares with
five pets. Maria's lifestyle provides evidence of __________. - (Correct Answer)-biophilia
Species richness is the __________. - (Correct Answer)-number of species in an area
Endemic species are ________. - (Correct Answer)-limited to just one location, such as an
island
A large flock of endemic birds is discovered on a remote island. There appears to be two similar
but different kinds of birds within the flock. Which of the following information is most
important in deciding whether the two kinds of birds belong to a single species? - (Correct
Answer)-whether the matings between kinds produce viable offspring
Which of the following is an example of the single greatest cause of species extinction? -
(Correct Answer)-habitat fragmentation caused by building a road through a forest
In his 2005 book, Last Child in the Woods, Richard Louv maintains that today's children
________. - (Correct Answer)-suffer psychologically and emotionally from "nature deficit
syndrome"
, 3
A migratory bat species pollinates agave plants in northern Mexico on its way to the
southwestern United States where it spends the summer eating insects and reproducing. Farmers
spraying pesticides affect these bats, which eat the insects and also feed them to the baby bats.
This could be the start of a story about ________. - (Correct Answer)-threats to a keystone
species
Which of the following would be the most reasonable estimate of the number of species on the
planet? - (Correct Answer)-14 million
What is the second greatest cause of decline for threatened species? - (Correct Answer)-
pollution
Which of these statements is supported by the graph? Select all that apply. - (Correct Answer)-
Habitat loss is the greatest known cause of amphibian decline.
Which of the following best describes a biodiversity "hotspot"? - (Correct Answer)-A hotspot is
a region where species diversity is high but threatened by habitat loss.
Which of the following statements about cloning organisms is true? - (Correct Answer)-
Producing cloned animals and keeping them in zoos does not increase biodiversity of the
species.
Bullfrog tadpoles are often sold as fish bait, even in areas where they do not occur naturally.
When people buy 10 of them and don't use them all, they often dump the remainder into the lake
or river. This is an example of ________. - (Correct Answer)-an introduced species
More species have been identified and classified in this group than in any other. - (Correct
Answer)-Insects
Overall, how many studies showed a positive effect of organic farming on biodiversity? -
(Correct Answer)-66
