Ecology Population Dynamics Quiz

Play an AI-generated podcast conversation about this lesson

Which of the following best defines a population?

All abiotic factors in an ecosystem

Same species in the same place at the same time (correct)

Different species living together

All organisms in a specific area

The biosphere includes only living organisms.

False

What is biotic potential?

Maximum reproductive capacity of a species under ideal conditions.

The pattern of spacing within geographic boundaries of a population is known as __________.

dispersion Signup and view all the answers

Which type of dispersion is characterized by individuals being unevenly distributed, usually due to uneven resources?

Clumped Signup and view all the answers

Match the following types of dispersion with their descriptions:

Uniform = Evenly spaced individuals Random = Unpredictable spacing Clumped = Grouped around resources Signup and view all the answers

A community includes abiotic factors such as soil and temperature.

False Signup and view all the answers

Give an example of a population.

The number of squirrels on NC State’s campus. Signup and view all the answers

What is the primary characteristic of exponential growth?

Population grows at maximum rate Signup and view all the answers

Exponential growth is commonly seen in natural populations without any checks.

False Signup and view all the answers

What formula is used to calculate the growth rate (r) of a population?

r = ΔN/ΔT Signup and view all the answers

When a population grows infinitely due to perfect conditions, it is referred to as __________ growth.

exponential Signup and view all the answers

Match the following terms with their definitions:

Doubling Time = Time required for a population to double in size Biotic Potential = Maximum reproductive capacity of a population Limiting Factors = Environmental constraints affecting population growth Zero Population Growth = Condition where a population's size remains stable Signup and view all the answers

Which of the following statements is true regarding the growth rate (r)?

r is negative if the population is declining Signup and view all the answers

Doubling time is calculated by dividing 70 by the percent increase in population per year.

True Signup and view all the answers

What term describes factors that prevent a population from reproducing and growing?

limiting factors Signup and view all the answers

Which of the following is a characteristic of 'K' selected species?

Few offspring produced at a time Signup and view all the answers

Density independent factors limit population growth only when the population density is high.

False Signup and view all the answers

What is the term for the maximum number of individuals that an environment can sustain indefinitely?

carrying capacity Signup and view all the answers

The type of growth that fluctuates around the carrying capacity is called __________ growth.

logistic Signup and view all the answers

Match the following factors to their corresponding types:

Predation = Density Dependent Flooding = Density Independent Starvation = Density Dependent Natural Disaster = Density Independent Signup and view all the answers

Which of the following statements about 'R' selected species is true?

They often reproduce in unpredictable environments. Signup and view all the answers

Overshooting the carrying capacity can lead to population collapse due to limiting factors.

True Signup and view all the answers

What is one of the main features of density dependent factors?

They limit population growth as the population density increases. Signup and view all the answers

Which survivorship curve describes species that have a high likelihood of surviving to old age?

Type I Signup and view all the answers

Demographic transition refers to the shift from high birth and death rates to low rates.

True Signup and view all the answers

What typically characterizes the age structure of a populations with rapid growth?

A large number of individuals in younger age groups. Signup and view all the answers

Type ___ survivorship curve has a constant mortality rate throughout the organism's life span.

II Signup and view all the answers

Match the demographic concepts with their definitions:

Pre-Industrial = High Birth and Death Rates Early Industrial = High Birth Rate, Death Rate begins decreasing Mature Industrial = Birth Rate begins decreasing, Death Rate is Low Post Industrial = Both Low Birth and Death Rates Signup and view all the answers

Which type of society typically has a higher birth rate due to children being seen as assets?

Agrarian Society Signup and view all the answers

The ecological footprint measures how many individuals are in a population.

False Signup and view all the answers

What is the primary characteristic of Type III survivorship curve?

Most individuals die early in life. Signup and view all the answers

What is the term for the actual resources available to an organism in its environment?

Realized niche Signup and view all the answers

Resource partitioning allows species to share resources without competing directly.

True Signup and view all the answers

What process occurs when natural selection favors traits that decrease competition between species?

Character Displacement Signup and view all the answers

Barnacles on a rocky shore can occupy different positions on the rock due to the absence of __________ from other species.

competition Signup and view all the answers

Match the following terms with their definitions:

Realized Niche = Resources actually available to an organism Resource Partitioning = Dividing resources among species to coexist Character Displacement = Evolution of traits to reduce competition Sympatric environments = Living in the same environment and evolving differently Signup and view all the answers

Which of the following is an example of resource partitioning?

Birds foraging at different levels of a tree canopy Signup and view all the answers

Character displacement is more likely to occur in allopatric environments than in sympatric environments.

False Signup and view all the answers

What is the main advantage of resource partitioning in an ecosystem?

It reduces direct competition among species. Signup and view all the answers

Ecology Population Dynamics Quiz

Choose a study mode

Podcast

Questions and Answers

Which of the following best defines a population?

The biosphere includes only living organisms.

What is biotic potential?

The pattern of spacing within geographic boundaries of a population is known as __________.

Which type of dispersion is characterized by individuals being unevenly distributed, usually due to uneven resources?

Match the following types of dispersion with their descriptions:

A community includes abiotic factors such as soil and temperature.

Give an example of a population.

What is the primary characteristic of exponential growth?

Exponential growth is commonly seen in natural populations without any checks.

What formula is used to calculate the growth rate (r) of a population?

When a population grows infinitely due to perfect conditions, it is referred to as __________ growth.

Match the following terms with their definitions:

Which of the following statements is true regarding the growth rate (r)?

Doubling time is calculated by dividing 70 by the percent increase in population per year.

What term describes factors that prevent a population from reproducing and growing?

Which of the following is a characteristic of 'K' selected species?

Density independent factors limit population growth only when the population density is high.

What is the term for the maximum number of individuals that an environment can sustain indefinitely?

The type of growth that fluctuates around the carrying capacity is called __________ growth.

Match the following factors to their corresponding types:

Which of the following statements about 'R' selected species is true?

Overshooting the carrying capacity can lead to population collapse due to limiting factors.

What is one of the main features of density dependent factors?

Which survivorship curve describes species that have a high likelihood of surviving to old age?

Demographic transition refers to the shift from high birth and death rates to low rates.

What typically characterizes the age structure of a populations with rapid growth?

Type ___ survivorship curve has a constant mortality rate throughout the organism's life span.

Match the demographic concepts with their definitions:

Which type of society typically has a higher birth rate due to children being seen as assets?

The ecological footprint measures how many individuals are in a population.

What is the primary characteristic of Type III survivorship curve?

What is the term for the actual resources available to an organism in its environment?

Resource partitioning allows species to share resources without competing directly.

What process occurs when natural selection favors traits that decrease competition between species?

Barnacles on a rocky shore can occupy different positions on the rock due to the absence of __________ from other species.

Match the following terms with their definitions:

Which of the following is an example of resource partitioning?

Character displacement is more likely to occur in allopatric environments than in sympatric environments.

What is the main advantage of resource partitioning in an ecosystem?

More Like This

Biology Flashcards: Population Dynamics

Ecology and Population Dynamics Quiz

Ecology & Population Dynamics Quiz

Population Biology Quiz