Factors Affecting Growth of Organisms

What does a limiting factor do?

• makes a population grow large
• stops a population from growing too large
• helps organisms adapt to abiotic factors
• provides geographical boundaries for migration

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Temperature, light, air, water, soil and climate are all ______ parts of the environment.

• biotic
• abiotic
• living
• boreal

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When a population grows past the ecosystem's carrying capacity, what happens to the population?

• Continues to grow
• The population starts to die off to return to carrying capcity
• The population will go extinct due to lack of resources
• The population grows then finds a new carrying capacity

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If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?

• The bird population would stay the same
• The bird population would infinitely increase
• The bird population would decrease

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If the amount of food or resources available increases, the carrying capacity for an animal:

• Stays the same
• Increases
• Decreases
• Fluctuates

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In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

• Squirrel Population
• Sunlight
• Grass available

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If the carrying capacity of a predator decreases, what will happen to the carrying capacity of the prey?

• Will Increase
• Will Decrease
• Will stay the same
• Will fluctuate

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What is the carrying capacity of the graph?

• around 500
• more than 500
• less than 500
• around 600

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Biotic or abiotic things that control the size of a population

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

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The largest number of individuals in a species that an environment can support long term

• carrying capacity
• emigration
• immigration
• population density