Characteristics of Populations

What is a population?

• A group of individuals that belong to the same species that live in the same area at the same time.

• A single organism living in an ecosystem.

• A collection of different species living together.

• The physical environment where an organism lives.

Tags

NGSS.MS-LS4-4

A population of daisies that live in a field is easy to measure because the plants are ______ and are confined to a relatively small area.

• immobile

• mobile

• transient

• nomadic

What is population density?

• The number of individuals per unit area.

• The number of species in an ecosystem.

• The variation in population size.

• The growth rate of a population.

What is dispersion?

• The spatial distribution of individuals within the population.

• The temporal distribution of individuals within the population.

• The genetic distribution of individuals within the population.

• The behavioral distribution of individuals within the population.

Which of the following is a type of dispersion?

• Clumped Dispersion

• Scattered Dispersion

• Mixed Dispersion

• Isolated Dispersion

What is clumped dispersion?

• Individuals are evenly spaced.

• Individuals are randomly distributed.

• Individuals are clustered together.

Why do clumped distributions often occur?

• Due to random chance.

• Because resources such as food, water, or living spaces are clumped together.

• Because individuals prefer isolation.

Tags

NGSS.MS-LS2-1

Clumped distributions may occur due to social behavior in species because:

• they provide better protection against predators.

• they lead to increased competition for resources.

• they result in more uniform resource distribution.

• they cause increased disease transmission.

In an even dispersion, individuals are:

• Clumped together

• Randomly scattered

• Separated by a fairly even distance

• In a single line

In random dispersion, the location of one individual is _______ of the location of the other individuals. (Fill in the blank)

• independent

• dependent

• correlated

• fixed