Quiz: Take The Practice Test On Ecosystem!

12 Questions | Total Attempts: 212

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Quiz: Take The Practice Test On Ecosystem!

An ecosystem is a structural and functional component of ecology where the living organisms interact with each other and their surrounding environment. It is a sequence of interaction between organisms and their environment. Ecosystems contain biotic or living parts and non-living factors, and an animal is a biotic factor, while an abiotic factor is a rock. This practice quiz will get you ready for the exam on ecosystems.


Questions and Answers
  • 1. 
    Mutualism is a symbiotic relationship in which both species benefit. The term mutualism is applicable to which of the following organism(s)
    • A. 

      Lichen

    • B. 

      Barnacle and a whale

    • C. 

      Mistletoe and tree

    • D. 

      Epiphytic orchid and tree

  • 2. 
    Which level of organization includes several different populations that live together in a defined area?
    • A. 

      Group

    • B. 

      Species

    • C. 

      Community

    • D. 

      Biome

  • 3. 
    Abiotic factors that affect the growth of grass in a lawn include
    • A. 

      Bacteria and soil

    • B. 

      Earthworms and nutrients

    • C. 

      Moisture and minerals

    • D. 

      Fertilizer and decomposers

  • 4. 
    Which type of organism can obtain energy directly from any of the other organisms in an ecosystem?
    • A. 

      Herbivore

    • B. 

      Omnivore

    • C. 

      Producer

    • D. 

      Decomposer

  • 5. 
    Which statement best describes the flow of energy and the movement of chemical compounds in an ecosystem?
    • A. 

      Energy flows into living organisms and remains there, while chemical compounds are transferred from organism to organism.

    • B. 

      Chemical compounds flow in one direction in a food chain and energy is produced.

    • C. 

      Energy is transferred from organism to organism in a food chain and chemical compounds are recycled.

    • D. 

      Energy flows out of living organisms and is lost, while chemical compounds remain permanently inside organisms.

  • 6. 
    The arrows in a food chain show
    • A. 

      Who is eaten by whom

    • B. 

      Who eats who

    • C. 

      Energy transfer

    • D. 

      Trophic levels

  • 7. 
    All of the following are sources of carbon dioxide production exept
    • A. 

      Volcanic activity

    • B. 

      Burning of fossil fuels

    • C. 

      Decomposition of organic matter

    • D. 

      Lightening

  • 8. 
    Atmospheric nitrogen is returned to the atmosphere by
    • A. 

      Bacteria in root nodules

    • B. 

      Decomposers

    • C. 

      Denitrifying bacteria

    • D. 

      Nitrogen fixers

  • 9. 
    Approximately  __________ of the energy in one trophic level is transferred to the next level, most of the energy is lost in the form of _________.
    • A. 

      100%, heat

    • B. 

      25%, heat

    • C. 

      10%, heat

    • D. 

      25%, waste

  • 10. 
    The relationship between tapeworm and certain animals can be classified as parasitic because
    • A. 

      While one organism benefits, the other is unaffected

    • B. 

      While one organism is harmed, the other is benefitted

    • C. 

      Both organisms are benefitted

    • D. 

      Both organisms are harmed

  • 11. 
    Some ants stand on top of other ants to prevent wasps from laying their eggs on the ants so the egg will hatch in the ant nest and have access to food and nutrients. This is an example of a __________ behavior.
    • A. 

      Commensal

    • B. 

      Parasitic

    • C. 

      Mutualistic

  • 12. 
    Atmospheric nitrogen must be converted into a usable form in order to be used by plants and other organisms. Atmospheric nitrogen is converted to ammonia by
    • A. 

      Decomposers

    • B. 

      Denitrifying bacteria

    • C. 

      Bacteria is root nodules

    • D. 

      Detrivores

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