Population Ecology

The mortality rate of organisms following a type I survivorship curve is __________.

• fairly constant throughout life

• higher in post-reproductive years

• lower after the organisms become established

• unrelated to age

Animals such as pandas are long lived, mature slowly, and generally produce fewer offspring during their life spans but place a greater investment in each. What term is applied to this type of reproductive strategy?

• K-strategy

• r-strategy

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

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

• forest fire

• seasonal cycles

• storms

• disease

Which of the following are density dependent factors?

• competition for resources

• predation

• disease

• natural disasters

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