Chapter 20

Question 1

endemic species

Answer 1

a species whose distribution is limited to a specific geographic area

Question 2

interspecific competition

Answer 2

competition between populations of two or more species that require similar limited resources

Question 3

keystone species

Answer 3

a species whose impact on its community is much larger than its biomass or abundance indicates

Question 4

movement corridor

Answer 4

a series of small clumps or a narrow strip of quality habitat that connects otherwise isolated patches of quality habitat

Question 5

pyramid of production

Answer 5

a diagram depicting the cumulative loss of energy with each transfer in a food chain

Question 6

disturbances

Answer 6

in an ecological sense, a force that damages a biological community, at least temporarily, by destroying organisms and altering the availability of resources needed by organisms in the community.

Question 7

warning coloration

Answer 7

the bright color pattern, often yellow, red, or orange in a combo with black, of animals that have effective chemical defenses

Question 8

Biodiversity Hotspot

Answer 8

A small geographic area that contains a large number of threatened or endangered species and an exceptional concentration of endemic species (those found no where else).

Question 9

Biological Magnification

Answer 9

The accumulation of persistent chemicals in the tissue of consumers in food chains.

Question 10

Bioremediation

Answer 10

The use of living organisms to detoxify and restore polluted and degraded ecosystems.

Question 11

Competitive Exclusion

Answer 11

The concept that populations of two species cannot coexist in a community if their niches are nearly identical. Using resources more efficiently and having a reproductive advantage, one of the populations will eventually out compete and eliminate the other.

Question 12

Cryptic Corolation

Answer 12

Adaptive correlation that makes an organism difficult to spot against its background.

Question 13

Ecological Niche

Answer 13

The sum total of a species’ use of the biotic and abiotic resources of its habitat.

Question 14

Ecosystem Services

Answer 14

Functions performed by an ecosystem that directly or indirectly benefit people.

Question 15

Relative Abundance

Answer 15

he number of percent composition of an organism of a particular kind relative to the total number of organism in the area

Question 16

Restoration Ecology

Answer 16

the scientific study supporting the practice of ecological restoration, which is the practice of renewing and restoring degraded, damaged, or destroyed ecosystems and habitats in the environment by active human intervention and action.

Question 17

Species Richness

Answer 17

the number of species present in a sample, community, or taxonomic group

Question 18

Sustainable Development

Answer 18

development that meets the needs of the present without compromising the ability of future generations to meet their own needs.

Question 19

Trophic Structure

Answer 19

the pattern of movement of energy and matter through an ecosystem.

Question 20

Energy Flow

Answer 20

the amount of energy that moves through a food chain