Biology - 6.1 & Populations

The average number of people per square mile

• population distribution
• population density
• urbanization
• population rate

Leaving one's home to live in a new place

• Emigration
• Immigration
• Urbanization
• Ruralization

A population is __________________.

• a group of organisms of the same species, in the same place, at the same time.

• a group of organisms of the different species, in the same place, at the same time.

• an individual organism of the one species, in the same place, at the same time.

• a group of organisms of the same species, in the different place, at the same time.

What is the carrying capacity of the following graph?

• 1000
• 8000
• 800
• 600

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CCSS.HSF-IF.C.7E

Which of the following is an EXAMPLE of a limiting factor?

• Water
• the color of the sky
• Migration
• Thick fur

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NGSS.MS-LS2-4

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 When an environment has reached its carrying capacity for a certain population, which of the following is true? 

•  Growth and immigration rate is equal to death and emigration rate. 
•  Growth and immigration rate is greater than death and emigration rate. 
• Growth and immigration rate is less than death and emigration rate. 
• Growth rate is exponential. 

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NGSS.MS-LS2-4

Angel was trying to explain carrying capacity to her mother.  Which of the following descriptions is accurate? Carrying capacity is :

• the maximum number of individuals that an ecosystem can sustain. 
•  the ability of an environment to accommodate a growing population. 
• the greatest number of individuals that an area can sustain over the long term. 
• the maximum number of species that can co-exist in an area. 

An animal population decreases from 800 individuals to 600 individuals. Which of the following could explain this change in population size? 

•  The population size of the animal’s predator increased. 
•  The emigration rate of the animals from the population decreased. 
• The number of breeding pairs in the animal’s population increased. 
• The number of species competing with the animal for food decreased.  

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How does the predator-prey relationship affect a population?

• The predators and prey are in competition with each other.
• Usually either the predator or the prey will become extinct.
• The relationship controls the population size of both species.
• The predator species usually has exponential growth.

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NGSS.MS-LS2-2

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Which of the following is a limiting factor in a population of organisms

• reproductive replacement
•  life spans of the members
• fluctuations in atmospheric temperature
• availability of food