Module Test Review: Dynamic Ecosystems

  The largest number of individuals of one species that an ecosystem can support over time is its biotic potential.   

• True

• False

 A symbiotic relationship that benefits both species is referred to as commensalism.  

• True

• False

What is the difference between a community and an ecosystem?

• An ecosystem consists of living and nonliving things in an area. A community is all the members of one species in the area.

• An ecosystem consists of living and nonliving things in an area. A community is all the populations in the area.

• An ecosystem consists of nonliving things in an area. A community is all the living things in the area.

• An ecosystem consists of all the populations in an area. A community is all the nonliving things in the area.

Which of these are a limiting factor?

• food supply

• shelter

• existence of predators

• rocks

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   In a predator-prey relationship, _____.   

• the predator hunts the prey for food

• the prey hunts the predator for food

• the prey keeps the predator population from growing too large

• the prey are producers

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  A population cannot exceed the _________________ of its environment, which is the largest number of individuals that an ecosystem can support.   

• bioshpere

• community

• biotic potential

• carrying capacity

  A symbiotic relationship in which both partners benefit is called ______________.  

• mutualism

• commensalism

• parasitism

• cooperation

 What are three things that are limiting factors on the growth of a population.  (check all that apply)

• food

• wind

• water

• sunlight

• rocks

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Compare and contrast a population and a community. 

Mark the best answer that describes the relationship. 

• One is living and the other nonliving. A population is made up of one species, a community contains many species.

• Both are groups of living things. A community is made up of one species, a population contains many species.

• Both are groups of living things. A population is made up of one species, a community contains many species.

• None of them apply

Explain how competition can limit population size.   (Choose the best response)

• Competition can affect the amount of resources any individual can get, but either survives without harm.

• Competition can affect the amount of resources any individual can get.

• Competition can affect some individuals, but most are not affected by it.

• Competition only happens in unique ecosystems.

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