Question 1

Which of the following best describes the shape of a logistic population growth curve?

Accepted Answer

An S-shaped (sigmoid) curve

Question 2

What is the carrying capacity ($$K) in $$the context of population growth?

Accepted Answer

The maximum number of individuals an environment can support indefinitely

Question 3

Which equation represents the logistic growth of a population?

Accepted Answer

$$dN/dt = rN((K-N)/K)$$

Question 4

A population of finches on the Galapagos Islands dropped from 1,200 to 180 after a drought. Which factor most likely limited their population growth?

Accepted Answer

Density-independent factor

Question 5

Which of the following is a density-dependent factor that can limit population growth?

Accepted Answer

Resource competition

Question 6

If a population is growing exponentially, which equation best describes its growth?

Accepted Answer

$$dN/dt = rN$$

Question 7

Which scenario best illustrates a density-independent factor affecting population growth?

Accepted Answer

A hurricane drastically reduces a coastal bird population

Question 8

What happens to the population growth rate as the population size ($$N) $$approaches the carrying capacity ($$K) in $$the logistic growth model?

Accepted Answer

Growth rate slows and approaches zero

Question 9

Which of the following is NOT a characteristic of exponential population growth?

Accepted Answer

Population size eventually stabilizes at carrying capacity

Question 10

A population of walruses is observed to stabilize after a period of rapid growth. Which model best explains this pattern?

Accepted Answer

Logistic growth model

Question 11

Which of the following equations represents the environmental resistance in the logistic growth model?

Accepted Answer

$$(K-N)/K$$

Question 12

If $$N \u003e K in $$the logistic growth equation, what is the expected outcome for the population?

Accepted Answer

Population size will decrease

Question 13

Which real-world event is an example of a density-independent factor affecting population growth?

Accepted Answer

A volcanic eruption destroying habitat

Question 14

During a year of unusually high rainfall, the Galapagos finch population increased due to an abundance of seeds and caterpillars. What type of factor influenced this growth?

Accepted Answer

Density-independent factor

Question 15

Which of the following statements about carrying capacity ($$K) is $$TRUE?

Accepted Answer

It is determined by the availability of resources in the environment

Question 16

Which population growth model assumes unlimited resources and no environmental resistance?

Accepted Answer

Exponential growth model

Question 17

What is the primary difference between density-dependent and density-independent factors?

Accepted Answer

Density-dependent factors are influenced by population size, while density-independent factors are not

Question 18

Which of the following best describes geometric population growth?

Accepted Answer

Population increases by a constant proportion in each time interval

Question 19

In the logistic growth equation $$dN/dt = rN((K-N)/K)$$, what does $$r$$ represent?

Accepted Answer

The intrinsic rate of increase under ideal conditions

Question 20

Which population trend is observed in countries like Rwanda compared to Sweden and Hungary, according to the provided data?

Accepted Answer

Rapid population growth in Rwanda, slow decline in Sweden and Hungary

Population Growth and Regulation: Study Notes for General Biology

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