← Chapter 22 Test
5 Written Questions
5 Matching Questions
- Lacey Act of 1900
- ecosystem approach
- threatened species
- domesticated species
- endangered species
- a Wild species with so few individual survivors that the species could soon become extinct in all or most of its natural range.
- b prohibits transporting live/dead animals or their parts across state borders without a federal permit.
- c Wild species that is still abundant in its natural range but likely to become endangered because of a decline in numbers.
- d Goal: to protect populations of species in their natural habitats.
Strategy: preserve sufficient areas of habitats in different biomes and aquatic systems.
Tactics: protecting habitat areas through private purchase or government action; eliminating or reducing populations of nonnative species from protected areas; managing protected areas to sustain native species; and restoring degraded ecosystems.
- e Wild species tamed or genetically altered by crossbreeding for use by humans for food (cattle, sheep, and food crops), pets (dogs and cats), or enjoyment (animals in zoos and plants in gardens).
5 Multiple Choice Questions
- Minimum area of suitable habitat needed to maintain the minimum viable population. See minimum viable population.
- Species that migrate into an ecosystem or are deliberately or accidentally introduced into an ecosystem by humans.
- Value of an organism, species, ecosystem, or the earth's biodiversity based on its usefulness to us.
- Generally fixed route along which waterfowl migrate from one area to another at certain seasons of the year.
- Applied science of managing, analyzing, and communicating biological information.
5 True/False Questions
CITES treaty of 1975 → Convention on International Trade in Endangered Species. Lists (1) some 900 species that cannot be commercially traded as live specimens or wildlife products because they are in danger of extinction and (2) restricts international trade of 29,000 other species because they are at risk of being threatened.
ecological extinction → Species no longer found anywhere on earth; forever.
rare species → Species that (1) has naturally small numbers of individuals, often because of limited geographic ranges or low population densities, or (2) has been locally depleted by human activities.
adaptive radiation → Process in which numerous new species evolve to fill vacant and new ecological niches in changed environments, usually after a mass extinction or mass depletion. Typically, this takes millions of years.
minimum viable population (MVP) → Estimate of the smallest number of individuals necessary to ensure the survival of a population in a region for a specified time period, typically ranging from decades to 100 years.