Ecosystem Unit Test Review

A student listed some features of an ocean ecosystem. Which feature did the student include in the list incorrectly?

• Trees, shrubs, and grasses grow on the floor.

• Large bodies of salt water are divided by continents.

• Organisms like phytoplankton, crabs, sharks, and turtles are found in it.

• Factors like temperature, water depth, and salinity impact the types of organisms present.

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Which abiotic factor has the least  impact on plants in a grassland ecosystem?

• amount of rainfall

• change in temperature

• type of rock

• type of soil

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Daniel listed features of aquatic ecosystems.

Which statements are correctly classified into freshwater and saltwater ecosystems?

• 1, 2: freshwater ecosystem;

  3, 4: saltwater ecosystem

• 1, 2: saltwater ecosystem;

  3, 4: freshwater ecosystem

• 1, 3: freshwater ecosystem; 2, 4: saltwater ecosystem

• 1, 3: saltwater ecosystem;

  2, 4: freshwater ecosystem

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Which statement is true about an ecosystem?

• An ecosystem is made up of a few living organisms and their nonliving surroundings in an environment.

• An ecosystem is only made up of nonliving factors in an environment.

• An ecosystem is only made up of living organisms in an environment.

• An ecosystem is made up of all the living organisms and their nonliving surroundings in an environment.

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Lisa took a photograph while walking on a trail in a forest ecosystem near her home. Which factor in Lisa’s photograph is the best  example of a biotic factor in a forest ecosystem?

• air

• rocks

• soil

• trees

The examples in the table explain the role of organisms in their individual ecosystems.

 

 

What are the roles of the rabbit and snail in their ecosystems?

• decomposers

• primary consumers

• producers

• secondary consumers

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Examine the organism shown.

Into which energy role should the organism be classified?

• consumer

• decomposer

• producer

• scavenger

White-tailed deer are a species of deer commonly found in Mississippi.

 

Which term describes the white-tailed deer’s role in a food web?

• carnivore

• decomposer

• herbivore

• omnivore

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A Mississippi black bear consumes plants, insects, grubs, and rotting flesh as part of its diet. Which term describes the black bear’s role in a food web?

• carnivore

• decomposer

• herbivore

• omnivore

The diagram shows a food web of Chesapeake Bay.

Which statement correctly explains the immediate effect of removing large fish from the ecosystem?

• There would be a sudden increase in the population of small fish.

• There would be a sudden decrease in the population of ospreys.

• There would be a sudden increase in the population of sea ducks.

• There would be a sudden decrease in the population of bald eagles.

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