Population Ecology: Growth, Dynamics, and Factors Affecting Population Size

Question 1

Which aspect of population growth is considered in the logistic growth model?

Accepted Answer

Limited resources

Answer

Predation

Answer

Migration

Answer

Disease

Question 2

The carrying capacity of a population is determined by which of the following?

Accepted Answer

The resources available in the environment

Answer

The birth rate of the population

Answer

The immigration and emigration rates

Answer

The death rate of the population

Question 3

The equation dN/dt = rN represents:

Accepted Answer

Exponential population growth model

Answer

Carrying capacity equation

Answer

Logistic population growth model

Answer

Survivorship curve

Question 4

Which of the following is a density-independent limiting factor?

Accepted Answer

Natural disasters

Answer

Competition

Answer

Predation

Answer

Disease

Question 5

The carrying capacity of an environment is:

Accepted Answer

The maximum population size that can be sustained indefinitely

Answer

The minimum population size that can be sustained indefinitely

Answer

The ideal population size that maximizes individual fitness

Answer

The population size at which the birth rate is zero

Question 6

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

Accepted Answer

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

Answer

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

Answer

Both factors are influenced by population size.

Answer

Neither factor is influenced by population size.

Question 7

Which of the following is an example of a density-dependent limiting factor?

Accepted Answer

Competition for resources

Answer

Predation

Answer

Floods

Answer

Wildfires

Question 8

What is the key difference between the logistic and exponential population growth models?

Accepted Answer

The logistic model incorporates carrying capacity, whereas the exponential model does not.

Answer

The exponential model incorporates carrying capacity, whereas the logistic model does not.

Answer

Both models incorporate carrying capacity.

Answer

Neither model incorporates carrying capacity.

Question 9

How does emigration impact population size?

Accepted Answer

Decreases population size

Answer

Increases population size

Answer

Has no effect on population size

Answer

Can either increase or decrease population size

Question 10

Which of these factors does NOT directly influence the size of a population?

Accepted Answer

Weather patterns

Answer

Birth rate

Answer

Death rate

Answer

Immigration

Question 11

The maximum number of individuals that an environment can sustain is known as its:

Accepted Answer

Carrying capacity

Answer

Population density

Answer

Growth rate

Answer

Carrying size

Question 12

Which population growth model assumes unlimited resources and exponential growth?

Accepted Answer

Exponential growth

Answer

Logistic growth

Answer

Sigmoid growth

Answer

Linear growth

Question 13

Which of these is NOT an advantage of a large population size?

Accepted Answer

Reduced competition for resources

Answer

Increased genetic diversity

Answer

Enhanced resistance to environmental changes

Answer

Lower risk of extinction

Question 14

Which of the following does NOT directly influence the carrying capacity of an ecosystem?

Accepted Answer

Population growth rate

Answer

Resource availability

Answer

Climate

Answer

Interspecific competition

Question 15

How do density-dependent factors, like competition and predation, affect the size of a population?

Accepted Answer

They can control population growth, keeping populations below their carrying capacity.

Answer

They have a stronger impact on populations with low density.

Answer

They have no effect on population size, only on growth rates.

Answer

They positively influence population growth and size.

Question 16

Which population growth model assumes unlimited resources and exponential growth?

Accepted Answer

Exponential Growth Model

Answer

Leslie Matrix Model

Answer

Jolly-Seber Model

Answer

Logistic Growth Model

Question 17

When a population's growth rate is positive, it indicates that the population:

Accepted Answer

Is below its carrying capacity

Answer

Is above its carrying capacity

Answer

Is at its carrying capacity

Answer

Is decreasing in size

Question 18

Which characteristic is NOT associated with a stable population?

Accepted Answer

High birth rate and high death rate

Answer

No significant immigration or emigration

Answer

Equal birth and death rates

Answer

Constant population size

Question 19

The movement of individuals into or out of a population is referred to as:

Accepted Answer

Migration

Answer

Natalism

Answer

Mortality

Question 20

Population ecology focuses on studying:

Accepted Answer

Changes in populations over time and the factors influencing these changes

Answer

The genetic diversity within populations

Answer

The geographic distribution of species

Question 21

The logistic growth model assumes that:

Accepted Answer

Population growth rate decreases as the population approaches its carrying capacity.

Answer

Carrying capacity is unlimited.

Answer

Population growth rate remains constant regardless of population size.

Question 22

Which of the following is an example of a density-dependent limiting factor for a population?

Accepted Answer

Predation

Answer

Weather

Answer

Natural disasters

Question 23

Which of the following types of populations tends to exhibit the greatest fluctuations in size?

Accepted Answer

Small, isolated populations

Answer

Populations in stable environments

Answer

Large, well-connected populations

Answer

Populations with high birth rates

Question 24

Which of the following is a potential consequence of overpopulation in a population?

Accepted Answer

Increased competition for resources

Answer

Enhanced disease resistance

Answer

Improved habitat quality

Answer

Increased genetic diversity

Question 25

Which of the following techniques is commonly used to estimate the size of a population?

Accepted Answer

Mark-recapture

Answer

Ecological modeling

Answer

Genetic analysis

Answer

Satellite imagery

Question 26

Which of the following is a potential benefit of studying population ecology?

Accepted Answer

Informing conservation efforts for threatened species

Answer

Predicting weather patterns

Answer

Creating new technologies

Answer

Boosting economic growth