A behavior that is performed without any previous experience.

A behavior in which the individual’s experience in its environment plays a large role.

Cooperative Behaviors

A behavior that helps a member of the same species improve another individual’s fitness.

An animal that produces most of its heat as a by-product of metabolic reactions to maintain a warm and steady body temperature.

An animal that obtains most of its heat to warm its body from the environment.

The number of calories burned by an organism over time while at rest.

The biochemical process in which the energy of chemical compounds is used to build sugars.

Organism that obtains energy by photosynthesis or chemosynthesis. Also known as a producer.

An organism that obtains energy by eating other organisms. Also known as a consumer.

An arrangement of producers and consumers into successive levels that represents the movement of energy.

Per Capita Growth Rate (r)

The rate of population change divided by the size of the population.

Maximum Per Capita Growth Rate of a population

The maximum growth rate possible for a population living without any constraints.

Exponential Growth Model

A model of a population that continues to grow rapidly over time in an exponential manner.

Carrying Capacity (k)

A limit on how many individuals can be supported in a given environment.

Density-independent factor

Factors that reduce density regardless of a population’s size.

Density-dependent factor

Factors that limit population growth as its size increases.

Logistic growth model

A growth model that describes population growth when there is a density-dependent carrying capacity.

Simpson's diversity index

An equation that quantifies the diversity of species in a community.

An interaction that involves one species killing and consuming another.

An interaction in which one species lives in or on another organism, known as the host.

An interaction between species that require the same limited resource.

A special type of symbiosis in which both species benefit in regard to their growth or reproduction.

An interaction in which one species receives a benefit while the other species is neither harmed nor helped.

Pivotal populations that affect other members of the community in ways that are disproportionate to their abundance or biomass.

When indirect effects are initiated by the presence of a predator.

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AP Biology

Unit 8 Population Ecology

Question	Answer
Innate Behaviors	A behavior that is performed without any previous experience.
Learned Behaviors	A behavior in which the individual’s experience in its environment plays a large role.
Cooperative Behaviors	A behavior that helps a member of the same species improve another individual’s fitness.
Endotherm	An animal that produces most of its heat as a by-product of metabolic reactions to maintain a warm and steady body temperature.
Ectotherm	An animal that obtains most of its heat to warm its body from the environment.
Metabolic Rate	The number of calories burned by an organism over time while at rest.
Chemosynthesis	The biochemical process in which the energy of chemical compounds is used to build sugars.
Autotroph	Organism that obtains energy by photosynthesis or chemosynthesis. Also known as a producer.
Heterotroph	An organism that obtains energy by eating other organisms. Also known as a consumer.
Trophic Level	An arrangement of producers and consumers into successive levels that represents the movement of energy.
Per Capita Growth Rate (r)	The rate of population change divided by the size of the population.
Maximum Per Capita Growth Rate of a population	The maximum growth rate possible for a population living without any constraints.
Exponential Growth Model	A model of a population that continues to grow rapidly over time in an exponential manner.
Carrying Capacity (k)	A limit on how many individuals can be supported in a given environment.
Density-independent factor	Factors that reduce density regardless of a population’s size.
Density-dependent factor	Factors that limit population growth as its size increases.
Logistic growth model	A growth model that describes population growth when there is a density-dependent carrying capacity.
Simpson's diversity index	An equation that quantifies the diversity of species in a community.
Predation	An interaction that involves one species killing and consuming another.
Parasitism	An interaction in which one species lives in or on another organism, known as the host.
Competition	An interaction between species that require the same limited resource.
Mutualism	A special type of symbiosis in which both species benefit in regard to their growth or reproduction.
Commensalism	An interaction in which one species receives a benefit while the other species is neither harmed nor helped.
Keystone Species	Pivotal populations that affect other members of the community in ways that are disproportionate to their abundance or biomass.
Trophic Cascade	When indirect effects are initiated by the presence of a predator.

Created by: DrStokes

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