Population Ecology

Front

If birth rate exceeds the death rate, a population _______.

Back

grows

Front

What term is used to define the limit that regulates the size of a population?

Back

a limiting factor

Front

The lion is the natural predator of the zebra. If the zebra population drops, what will likely happen to the lion population?

Back

drop

Front

Under ideal conditions with unlimited resources, a population will have ________.

Back

exponential growth

Front

Which best describes the graph of logistic growth?

Back

S-shaped

Front

What is carrying capacity?

Back

The maximum population size that an environment can sustain indefinitely.

Front

Define density-dependent factors.

Back

Factors that affect population growth in relation to the population density, such as competition and predation.

Front

Define density-independent factors.

Back

Factors that affect population growth regardless of population density, such as natural disasters.

Front

What is the difference between exponential growth and logistic growth?

Back

Exponential growth occurs without limits, while logistic growth accounts for environmental carrying capacity.

Front

What is a trophic level?

Back

The position an organism occupies in a food chain, which determines its role in the ecosystem.