Ecosystem Populations Dynamics

To measure population density, you must divide the number of individuals living in a defined space by the

• area of the space
• birth and death rates
• carrying capacity
• height of the space

Nesting birds often space themselves evenly from other nests. This pattern is called

• clumped dispersion.
• uniform dispersion.
• random dispersion
• scatter dispersion

Which of the following will increase the size of a population?

• emigration and births
• immigration and deaths
• immigration and births
• emigration and deaths

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

• human activities 
• unusual weather
• competition
• natural disaster

Tags

NGSS.MS-LS2-4

Which of the following statements about primary succession is true?

• It begins with a climax community
• Small mammals are the first to live there
• It begins with bare rock
• It begins with rock and soil

What type of growth is shown on this graph?

• logistic
• exponential
• average
• density-independent

Tags

NGSS.HS-LS2-1

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

• natural disaster
• predation
• disease
• parasitism

The way in which individuals of a population are spread out is called

• population density
• survivorship
• population dispersion
• logistic curve

The movement of a single caribou into a herd is an example of

• population
• immigration
• emigration
• predation

What pattern of growth will a population with limited resources show?

• density-dependent
• exponential 
• logistic
• logical 

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4