Population Ecology Z Quick Quiz 2

Which of the following are density dependent factors?

• competition for resources

• predation

• disease

• natural disasters

Which of the following are examples of a density independent factors?

• forest fire

• seasonal cycles

• storms

• disease

This graph shows ....

• When one population increases, the other decreases.

• When one population decreases, the other increases.

• When one population increases, the other increases instantly.

• When one population increases, it causes the other to increases shortly after.

Which contribute to a positive population growth?

• immigration

• positive birth rate

• emigration

• positive death rate

Which of the following is NOT an outcome of high population density?

• mortality increase

• predators tend to ignore prey that is overabundant

• reduction in births

• decreased resource availability

Which of the following describes the population of elephants in Kenya from 1973-1989?

• (immigration + births) – (emigration + deaths) = 0

• (immigration + births) – (emigration + deaths) = 1

• (immigration + births) – (emigration + deaths) < 0

• (immigration + births) – (emigration + deaths) > 0

As a population of a species increases within a territory, which of the following most likely also increases?

• Immigration

• Food supply

• Carrying capacity

• Competition

What type of growth model is shown in image A?

• Exponential

• Logistic

At carrying capacity, a population __________.

• increases rapidly

• increases slowly

• decreases slowly

• is in dynamic equilibrium

Which of the following populations is most likely to go extinct?

• a very small population in an unstable environment

• a moderate-sized population of r strategists

• a large population with lots of genetic variability

• all would be equally likely to go extinct