Population Dynamics part 1- 9 Elite

If the population of a certain predator increases, there is often _______ its prey

• a decrease the population of
• an increase of the population of 
• great news for its prey of
• no  impact found on

Biotic or abiotic things that control the size of a population

• Limiting factor
• density- dependent factor
• density- independent factot
• tolerance

The two species, Paramecium aurelia and Paramecium caudatum, which do not prey upon each other, fighting to grow in the same test tube is an example of which of the following?

• Competition
• Predation
• Emigration
• Immigration

Living factors or organisms that affect an ecosystem

• abiotic factors
• species
• trophic level
• biotic factors

Number of organisms per unit of living area

• Population density
• dispersion
• carrying capacity
• population growth rate

Food, water, sunlight, air, soil are ___________  that are often __________.

• abiotic factors, limiting resources
• biotic factors, limiting resources
• abiotic factors, controllable
• biotic factors, found in rocks

What happened to the wolf population between 1980 and 1982?

• it increased rapidly
• it decreased rapidly

What was the moose population in 1975?

• 30
• 1600
• 1200
• 40

In 1980 how many wolves were there?

• 20
• 30
• 50
• 60

Which of the following are density dependent factors?

• competition for resources

• predation

• disease

• natural disasters