Chapter 10: Biodiversity

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

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

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The International Union for Conservation of Nature and Natural Resources (IUCN)

• is known for trying to save endangered species through dramatic, attention-grabbing protests

• is an organization of multinational corporations united to fight conservation efforts.

• is collaboration of about 200 governmental agencies and 700 private conservation groups from around the world

• was disbanded after Earth Summit of 1992

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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

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The United States laws that protect endangered species

• are considered to be 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

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According to biologists, what percentage of species have become or are expected to become extinct between 1900 and 2100?

• 1 percent

• 10 percent

• 25 percent

• 60 percent

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Earth's various organisms appear to be

• mostly small vertebrates

• largely known to scientist

• concentrated in central biomes

• evolving at an unprecedented rate

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The current rate of species extinction is

• slower than at any other time in this century

• attributed to the actions of humans

• the result of natural environmental processes

• of little consequence to Earth's long-term survival

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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

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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

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