POPULATIONS & COMMUNITIES

REVIEW

The nonliving things within the

environment.

ABIOTIC FACTORS

The living things within the

environment.

BIOTIC FACTORS

Level of organization below community; a

group of these form a community.

POPULATIONS

Can you name one of the

characteristics/factors used to study a

population?

•DENSITY•SIZE•SPACE

Can you name one of the

characteristics/factors that determine an organism’s niche?

• DIET• INTERACTION WITH OTHER

ORGANISMS•MEANS OF GETTING FOOD

During predation, what do you call the

organism that does the hunting?

PREDATOR

What do you call two species of organisms that live in the same

community and compete over

resources?

COMPETITORS

Can you give one example of an abiotic

factor?

• WATER• SUNLIGHT

• OXYGEN (AIR)• TEMPERATURE

(WEATHER/CLIMATE)• SOIL (LAND/TOPOGRAPHY)

The study of interactions that take

place between organisms within their

environment.

ECOLOGY

A single individual from a population.

ORGANISM

The biotic communities and the abiotic factors

that affect them..

ECOSYSTEM

The contest among organisms to obtain the resources they need to survive and

reproduce.

COMPETITION

A symbiotic relationship that

benefits both species.

MUTUALISM

The physical location where an organism

lives.

HABITAT

Name for a species that is first to inhabit a

new area primarily after a volcanic

eruption.

PIONEER

Type of ecological succession that begins

in a place that does not have soil and has

never supported living

organisms.

PRIMARY

In addition to sunlight and precipitation, what other abiotic factor affects plant

growth?

TEMPERATURE (WEATHER/CLIMATE)

Type of ecological succession that occurs in an area that has soil

and was once the home of living

organisms.

SECONDARY

Any abiotic factor that restricts the number of

individuals in a population.

LIMITING FACTOR

The size of a population occupying

an area of specific size.

POPULATION DENSITY

The largest number of individuals an

environment can support and maintain for a long period of

time.

CARRYING CAPACITY

The part of the Earth that supports living organisms; largest

level of organization for life.

BIOSPHERE

The feeding of one organism on another.

PREDATION

The role of an organism in an

ecosystem.

NICHE

Type of relationship where one organism

benefits and the other harms its host.

PARASITISM

Any close relationship between two or more

different species.

SYMBIOSIS

A type of relationship where one partner

benefits and the other is neither helped nor

harmed.

COMMENSALISM

Do you know the difference between abiotic and biotic

factors? Can you give examples of each?

Do you know the difference between

mutualism, parasitism, and predation? Can

you give an example of each?

Can you compare/contrast

primary and secondary succession?

It’s a new year . . . Resolve to study more and give nothing but

your best!

GOOD LUCK!!