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Chapter 11: Biodiversity and Conservation Biology
This activity contains 25 questions.
Which statement about biodiversity is true?
While biodiversity is important in helping an ecosystem in the face of disturbance, it is of little importance when we look at the ecosystem services provided by an ecosystem.
Biodiversity can be measured at different levels including genetic diversity, species diversity, and ecosystem diversity.
The biodiversity of the animal kingdom is evenly dispersed among its different taxonomic groups.
The total of the planet's biodiversity has been named and cataloged.
The Endangered Species Act is often a center of controversy because _____.
there are animals listed that are not worth saving
scientists want to make all species endangered
landowners are concerned that federal officials will restrict the use of private land if threatened or endangered species are found on it
it has not been successful
If a conservation biologist wanted to try to stop the largest cause of species extinction, what should he or she focus on?
water loss and water pollution
Global biodiversity exists in a number of patterns. The largest and most obvious of these is that biodiversity is _____.
higher at the start of a river than at its end
greatest at the equator and drops as you move farther north or south
greatest at high elevations but drops as you descend
distributed evenly across Earth's surface
A biodiversity "hotspot" is _____.
a region where species diversity is high, but threatened by habitat loss.
a region where animals should be brought together in an enclosure
an area near volcanic vents on the ocean floor where the diversity of chemosynthetic communities is high
an area where the rate of species extinction is high
The sixth mass extinction event _____.
has not occurred
happened millions of years ago by an asteroid
is ongoing and has been caused by human disturbance
happened billions of years ago as a result of the sun being further away from Earth
Conservation biology is different from other fields of science discussed in the book because _______.
it is an applied and goal-oriented science, with implicit values and ethical standards
conservation biologists ignore the scientific method
it is based only on computer simulations and ignores real-world data
even when the evidence does not support a hypothesis, conservation biologists continue to test that hypothesis until they find evidence to support it
How have humans influenced the rate of extinction?
While humans had greatly accelerated the rate of extinction, in the past hundred years conservation efforts have protected most of the world's biodiversity and relatively few species are now faced with extinction.
The current rate of extinction is between 100 and 1,000 times higher than the historical background rate.
Humans have accelerated the rate of extinction, but only since the industrial revolution.
Human activity caused the fourth and fifth mass extinctions.
The development of pharmaceutical products has been _____.
successful despite the lack of useful drugs coming from natural sources
attacked by majority of groups and people trying to protect endangered species
aided by protection of ecosystem diversity
focused exclusively on creating new chemicals in the lab
Which group of organisms is the most important in terms of contributing the most species to global biodiversity?
Of the taxonomic levels below, two species that are in the same _____ are most closely related evolutionarily.
CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora) tries to prevent the extinction of species by _____.
establishing biosphere reserves where people and endangered species live side by side
raising endangered species for sale to cut out the market for wild harvested species
asking countries to stop the importation of organisms or parts of organisms (like tiger bones) if they are endangered species
using United Nations' troops to hunt down and arrest poachers
How is community-based conservation different from more traditional approaches to conservation?
In community-based conservation, local people are involved with protecting the habitat, allowing them to still gain benefit from its resources.
In community-based conservation, scientists from a wide range of backgrounds are brought together to focus the efforts of an entire scientific community of the problem.
Community-based conservation requires a large community of guards to patrol preserves and keep people out.
Community-based conservation focuses on protecting plant and animal communities rather than single species.
An umbrella species is best defined as _____.
a species, such as a large oak tree, that protects the soil from heavy downpours and prevents erosion
a species that, if protected, will result in the protection of a large number of species that require the same habitat
a species that, if removed, will cause the community to collapse and be reduced in its biodiversity
a particularly showy species that people will want to protect because it is so attractive
Which of the following populations would have the best chance of coping with environmental changes and persisting?
a population of humans originally from countries all over the world
a population of bacteria all coming from the same original clone
a population of humans all coming from the same family
a population of asexually reproducing organisms
Why can many different species coexist and thrive in areas close to the equator?
Equatorial climatic conditions provide little energy so species must work together to all share what is available.
Equatorial climatic conditions discourage any one species from dominating the ecosystem and encourage biodiversity.
Glaciation events at the equator promoted species diversity.
Equatorial climatic conditions favor generalists.
When a species declines in number, it also _____.
increases its biodiversity
occupies less area than it once did
spreads out and occupies more area than it once did
gets taken off of the Red List
According to the text, which of the following types of species would be most vulnerable to hunting by people?
small freshwater fish
Which of the following statements about the importance of organisms in an ecosystem is true?
Small organisms are less important than larger predators for the survival of the ecosystem.
Small organisms are always the keystone species in an ecosystem while larger predators are less important.
"Ecosystem engineers" can be as important as keystone species for the survival of the ecosystem.
No one species is more important than another in regard to the survival of an ecosystem.
Pharmaceuticals produced from wild species produce up to $150 billion in sales and save many lives each year. This is an example of _____.
Maria loves to be outdoors. She hikes every day in the woods, near the home that she shares with five pets and that is surrounded by mountains. Edward O. Wilson would argue that this is evidence of _____.
Which of the following can increase species richness globally?
All of the following are ways that humans reduce biodiversity in ecosystems except _____.
captive breeding programs
introduction of invasive species
Which of the following statements about cloning organisms is true?
Cloning of mammals is not possible.
Cloning mammals is the best solution for increasing the biodiversity of species on the earth.
Producing cloned animals and keeping them in zoos does not increase biodiversity of the species.
Cloning of mammals always leads to viable organisms that grow old enough to reproduce.
Which of the following methods is being employed by Conservation International to help countries keep their natural resources intact?
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