Pop ecology

Which of the following are density dependent factors?

• competition for resources

• predation

• disease

• natural disasters

What type of factor has an increasing impact as the population size increases?

• density-independent

• density-dependent

• cohort effect

• survivorship factor

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

• forest fire

• seasonal cycles

• storms

• disease

Factors like predation can have a positive benefit to the population of prey organisms because predators tend to keep prey populations below their ___________.

• carrying capacity

• sustainibility number

• exponential growth point

• competition level

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

What type of growth model is shown in image B?

• Exponential

• Logistic

What point on the graph represents carrying capacity?

• a

• b

• c

• d

At carrying capacity, a population __________.

• increases rapidly

• increases slowly

• decreases slowly

• is in dynamic equilibrium

Which choice most closely approximates the deer population's carrying capacity based on the graph?

• 100

• 80

• 60

• 10