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WorksheetsBiodiversity Chapter 10
Total questions: 25
Worksheet time: 13mins
An endangered species is
a species in danger of extinction.
a species growing on public land.
an organism brought to a place where it has not lived before.
a species that has disappeared entirely.
How many species are estimated to be living on Earth?
between 10,000 and 100,000
between 500,000 and 1 million
between 1 and 2 million
between 10 million and 50 million
Which of the following would be most effective in slowing the loss of biodiversity?
freezing fertilized eggs of endangered animals in case the species become extinct in the wild.
setting aside small plots of land in a variety of ecosystems, such as forests, grasslands, and marshes.
creating large parks/preserves in biodiversity hotspots.
requiring every country to maintain a seed bank.
In what part of the world are the greatest number of extinctions occurring?
in tropical rain forests
in deserts
in the Arctic
in Europe and the United States
Which of the following statements about the California Condor is correct?
The California condor has made a dramatic comeback and has been removed from the endangered species list.
The California condor is the subject of a captive-breeding program.
Several hundred breeding pairs of California condors have been released into the wild.
All of the above.
The United States laws that protect endangered species
are considered to the strongest in the world.
are much weaker than the legal protections in most other countries.
are rarely enforced.
apply to only 10 species of animals and about 20 species of plants.
Reintroducing the gray wolf in certain areas of the northwestern United States
is beneficial for all of those working in that area.
creates a mutualist interaction between wolves and elks.
is in accordance with the U.S. Endangered Species Act of 1973.
discourages hunters from hunting other animals.
Which of the following would not be illegal under the Endangered Species Act?
capturing a wild animal listed as a threatened species for exhibition in a zoo, provided the animal is well cared for
digging up an endangered plant in a public park and selling it
destroying the habitat of an endangered plant during the building of a federal highway
having a permit to capture and conduct research with endangered species
Earth's various organisms appear to be
mostly small vertebrates.
largely known to scientists.
concentrated in certain biomes.
evolving at an unprecedented rate.
The current rate of species extinction is
slower than at any other time in this century.
attributable to the actions of humans.
the result of natural environmental processes.
of little consequence to Earth’s long-term survival.
The fact that organisms are adapted to survive in particular environments helps to explain why
captive-breeding programs are often ineffective.
non-native plant species never flourish in new areas.
habitat destruction accounts for most extinctions.
compromise is impossible on environmental issues.
The type of hunting that threatens species survival the most is
sanctioned by industrialized nations.
legal hunting done by sports enthusiasts.
ignored by global conservation groups.
especially a problem in less developed nations.
The level of biodiversity that involves a variety of habits and communities is
ecosystem diversity.
genetic diversity.
population diversity.
species diversity.
Because of the Endangered Species Act, the sale of protected animals or plants is
punishable by a substantial fine.
subject to approval by a Species Review Board.
limited to quotas set for each species.
allowed for threatened but not endangered species.
When animals are placed in controlled or restrictive environments, they
become immune to infectious diseases that are common in the wild.
may have difficulty meeting their basic survival needs.
have a low rate of genetic disorders because their gene pool is large.
are less likely to compete.
The ecosystem approach to conservation is partly based on the idea that
all rare species should be relocated to regional preserves.
human needs are of secondary importance.
keystone species are genetically superior to other organisms.
a healthy biosphere requires intact ecosystems.
What level of biodiversity is most commonly equated with the overall concept of biodiversity?
genetic diversity
species diversity
ecosystem diversity
All of the above
What groups of organisms are most in danger of extinction?
(A) those with small populations
(B) those that migrate or need special habitats
(C) those with large populations that breed quickly
Both (a) and (b)
Why is biodiversity important to ecosystems?
It allows animals to feed permanently from one type of plant.
It increases at each level of the food chain.
It helps populations adapt to ecological changes.
It reduces the number of insects in a given ecosystem.
The major human causes of extinction today are
(A) hunting and destroying habitats.
(B) polluting and introducing non-native species.
Both (a) and (b)
Neither (a) nor (b)
Germ plasm is
an infection caused by germs.
the genetic material of a species.
a conservation strategy.
an endemic plant of California.
Which areas of the United States represent ecosystems with high levels of biodiversity?
coastal California
Hawaiian Islands
Florida Everglades
All of the above
Where are many critical biodiversity hotspots located?
cities and developed areas of the world
islands, tropical rain forests, and coastal areas
desert and polar environments
All of the above
How can zoos, botanic gardens, and wildlife parks help save species?
(A) by preserving threatened species from destruction.
(B) by collecting species from remote wilderness areas.
(C) by participating in captive breeding programs.
Both (a) and (c)
Reduction in the sea otter population affected the Pacific coast ecosystem by
decreasing the biodiversity of the ecosystem.
reducing the size of the sea urchin population.
promoting the increased growth of the nearby kelp beds.
increasing the biodiversity of the ecosystem.
