Hua Ecology Test Stuff

Question 1

age structure

Answer 1

the distribution of the proportion of population members in each age class

From openstax

Question 2

carrying capacity

birth rate

Answer 2

the number of births within a population at a specific point in time

From openstax

Question 3

carrying capacity

Answer 3

the maximum number of individuals of a population that can be supported by the limited resources of a habitat

From openstax

Question 4

From openstax

climax community

Answer 4

the final stage of succession, where a stable community is formed by a characteristic assortment of plant and animal species

From openstax

Question 5

competitive exclusion principle

Answer 5

no two species within a habitat can coexist indefinitely when they compete for the same resources at the same time and place

From openstax

Question 6

death rate

Answer 6

the number of deaths within a population at a specific point in time

From openstax

Question 7

demography

Answer 7

the statistical study of changes in populations over time

From openstax

Question 8

density-dependent regulation

Answer 8

the regulation of population in which birth and death rates are dependent on population size

From openstax

Question 9

density-independent regulation

Answer 9

the regulation of population in which the death rate is independent of the population size

From openstax

Question 10

environmental disturbance

Answer 10

a change in the environment caused by natural disasters or human activities

From openstax

Question 11

exponential growth

Answer 11

an accelerating growth pattern seen in populations where resources are not limiting

From openstax

Question 12

foundation species

Answer 12

a species which often forms the major structural portion of the habitat

From openstax

Question 13

host

Answer 13

an organism a parasite lives on

From openstax

Question 14

intraspecific competition

Answer 14

the competition among members of the same species

From openstax

Question 15

island biogeography

Answer 15

the study of life on island chains and how their geography interacts with the diversity of species found there

From openstax

Question 16

J-shaped growth curve

Answer 16

the shape of an exponential growth curve

From openstax

Question 17

K-selected species

Answer 17

a species suited to stable environments that produce a few, relatively large offspring and provide parental care

From openstax

Question 18

keystone species

Answer 18

a species whose presence is key to maintaining biodiversity in an ecosystem and to upholding an ecological community’s structure

From openstax

Question 19

life table

Answer 19

a table showing the life expectancy of a population member based on its age

From openstax

Question 20

logistic growth

Answer 20

the leveling off of exponential growth due to limiting resources

From openstax

Question 21

mark and recapture

Answer 21

a method used to determine population size in mobile organisms

From openstax

Question 22

mimicry

Answer 22

an adaptation in which an organism looks like another organism that is dangerous, toxic, or distasteful to its predators

From openstax

Question 23

mortality rate

Answer 23

the proportion of population surviving to the beginning of an age interval that dies during that age interval

From openstax

Question 24

mutualism

Answer 24

a symbiotic relationship between two species where both species benefit

From openstax

Question 25

one-child policy

Answer 25

a policy in China to limit population growth by limiting urban couples to have only one child or face a penalty of a fine

From openstax

Question 26

parasite

Answer 26

an organism that uses resources from another species: the host

From openstax

Question 27

pioneer species

Answer 27

the first species to appear in primary and secondary succession

From openstax

Question 28

population density

Answer 28

the number of population members divided by the area being measured

From openstax

Question 29

population size

Answer 29

the number of individuals in a population

From openstax

Question 30

primary succession

Answer 30

the succession on land that previously has had no life

From openstax

Question 31

quadrat

Answer 31

a square within which a count of individuals is made that is combined with other such counts to determine population size and density in slow moving or stationary organisms

From openstax

Question 32

r-selected species

Answer 32

a species suited to changing environments that produce many offspring and provide little or no parental care

From openstax

Question 33

relative species abundance

Answer 33

the absolute population size of a particular species relative to the population size of other species within the community

From openstax

Question 34

S-shaped growth curve

Answer 34

the shape of a logistic growth curve

From openstax

Question 35

secondary succession

Answer 35

the succession in response to environmental disturbances that move a community away from its equilibrium

From openstax

Question 36

species distribution pattern

Answer 36

the distribution of individuals within a habitat at a given point in time

From openstax

Question 37

species richness

Answer 37

the number of different species in a community

From openstax

Question 38

survivorship curve

Answer 38

a graph of the number of surviving population members versus the relative age of the member

From openstax

Question 39

zero population growth

Answer 39

the steady population size where birth rates and death rates are equal