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  • Grade 7 Concept Test

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    This document is a 7th grade concept test on ecosystems that includes: 1) A matching section with 5 questions to define producers, consumers, decomposers, herbivores, carnivores, omnivores, and scavengers. 2) A multiple choice section with 5 questions testing understanding of symbiotic relationships, pollution, food chains, and the water cycle. 3) Two short answer questions requiring students to list ways carbon dioxide is released and describe interactions in an ecosystem photo. 4) A long answer question asking students to create a food web including producers, consumers, decomposers, and carnivores.

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    This document is a 7th grade concept test on ecosystems that includes: 1) A matching section with 5 questions to define producers, consumers, decomposers, herbivores, carnivores, omnivores, and scavengers. 2) A multiple choice section with 5 questions testing understanding of symbiotic relationships, pollution, food chains, and the water cycle. 3) Two short answer questions requiring students to list ways carbon dioxide is released and describe interactions in an ecosystem photo. 4) A long answer question asking students to create a food web including producers, consumers, decomposers, and carnivores.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    2K views4 pages

    Grade 7 Concept Test

    Uploaded by

    api-334295481
    This document is a 7th grade concept test on ecosystems that includes: 1) A matching section with 5 questions to define producers, consumers, decomposers, herbivores, carnivores, omnivores, and scavengers. 2) A multiple choice section with 5 questions testing understanding of symbiotic relationships, pollution, food chains, and the water cycle. 3) Two short answer questions requiring students to list ways carbon dioxide is released and describe interactions in an ecosystem photo. 4) A long answer question asking students to create a food web including producers, consumers, decomposers, and carnivores.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 4

    Name: __________________________________

    Grade 7 Concept Test


    Instructions
    Please write your name on the top right corner of the test. The test includes five matching, five
    multiple choice, two short answer, and one long answer for a total of 30 marks. Please check that
    you have 4 pages. You will have 30 minutes to answer the questions about ecosystems.

    Matching
    In the blank, write the correct response letter from List B to the definition in List A. No items
    may be used more than once (5 marks).

    List A List B
    1. An organism that easts other animals; examples are A. Carnivores
    wolf, hawk, cougar. ________ B. Consumers
    C. Decomposers
    2. An organism that eats dead or decaying plant or animal D. Herbivores
    matter; an example is a carrion beetle. ________ E. Omnivores
    F. Producers
    3. An organism that breaks down cells of dead or water G. Scavengers
    materials and absorbs their nutrients. ________

    4. An animal that eats other animals and plant materials;


    examples are bears and raccoons. ________

    5. Uses the energy from the Sun to make nutrients needed


    to survive. ________

    Multiple-Choice
    Circle the correct answer to the following multiple-choice questions (5 mark)

    6. A small fish, called a remora, uses suckers on its head to attach itself to a great white sharks
    skin. This fish eats the bacteria and micro-organisms that are unhealthy for the shark. This
    symbiotic relationship is called:
    a. Commensalism
    b. Host-Parasite
    c. Mutualism
    d. Parasitism

    7. Many substances that occur naturally become pollutants when they are presented in
    concentrations too high for the environment to absorb without a negative effect. An example of
    this is:
    a. High levels of PCBs (polychlorintaed byphenyl) in water sources
    b. High levels of DDT (dichlorodiphenyl trichloroethan) in farm land
    b. High levels of nitrogen in water sources
    d. High levels of CO2 (carbon dioxide) in the atmosphere

    1
    Name: __________________________________

    8. Which of the following represents a correct food chain?


    a. hawkfield mouse corn
    b. eggtadpole frog
    c. grassgrasshopper robin
    d. algaebasssnails

    Use the following photo to answer question 9 and 10.

    9. Using the diagram above of the water cycle what number represents the process of
    transpiration?
    a. 1
    b. 2
    c. 3
    d. 5

    10. When air becomes so cool that it can no longer hold as much water vapour and liquid water
    is then formed is the process that is represented by number:
    a. 1
    b. 3
    c. 4
    d. 6

    2
    Name: __________________________________

    Short Answer
    Use the space required to answer the following two questions (6 marks each, 12 total).

    11. Plants use carbon dioxide from the air to make their own food. List and briefly describe, in
    one sentence, three ways how carbon dioxide is released in the atmosphere. (1 mark for the
    source, 1 mark for the sentence).

    Please use the following photo to answer question 12.

    12. By using the photograph above, describe three interactions between two parts of the
    ecosystems (using one or two sentences).
    a. biotic and biotic parts (2 marks)

    b. biotic and abiotic parts (2 marks)

    3
    Name: __________________________________

    c. abiotic and abiotic parts (2 marks)

    Long Answer
    Use the space provided to answer the following question.

    13. Create a viable food web, (of names, illustrations not required) which includes at least one of
    each: carnivores, producers, herbivores, and decomposers. Ensure you state which part of the
    food web is a carnivore, producer, herbivore, or decomposer. (8 marks: 6 marks for web, 2 marks
    for organism descriptors)

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