Ecology Review #3

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

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A non-native plant that causes problems to the environment that it is introduced to is called __________.

• Invasive
• Weed
• Indigenous
• Purple

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If the birth rate is _________ than the death rate then the population will ____________.

• Greater/Increase
• Greater/Decrease

Occurs when organisms MOVE in from another environment.

• Immigration
• Emmigration

The largest number of organisms that the environment can support. 

• Carrying Capacity
• Limiting Factor

Tags

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Environmental factors that keep a population from increasing. 

• Carrying Capacity
• Limiting Factors

Tags

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A scientist was studying a population of fish in a pond over a period of 10 years. He observed that

the population increased each year for 3 years, and then remained nearly constant for the rest of

the study. The best explanation for this observation is that the population had

• stopped reproducing

• reached carrying capacity

• mutated into a different species

• run out of food and all died

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Excessive amounts of rain caused a flood in the southwest United States that resulted in substantial amounts of deaths in the rabbit population? This situation is an example of a density _____________ limiting factor.

• density-independent
• density-dependent
• density- too high
• density- too low

Tags

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Natural disasters can be considered limiting factors.

• true: density independent limiting factors

• false; natural disasters are not limiting factors

• true: density dependent limiting factors

• false: because Mrs. Schaffer said

Tags

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Since lynx prey on hares, an increase in the hare population causes an increase in the lynx population.

• Density-Dependent: Competition

• Density-Independent: Competition

• Density-Dependent: Predator-Prey

• Density-Independent: Predator-Prey

Tags

NGSS.MS-LS2-4

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