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7th Grade - Analyzing an Ecosystem - Part 1: Ecosystems and Biodiversity

Quiz by Carolina Carner

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21 questions
Show answers
  • Q1
    When is an environment best able to support a variety of organisms?
    When the ecosystem is not in equilibrium
    When organisms have a variety of food (RESOURCES) and microhabitat
    When competition for food is controlled by humans
    30s
  • Q2
    Compare the two ecosystems shown in the diagrams above. How does the biodiversity of these two ecosystems effect their sustainability?
    Question Image
    Ecosystem A is more sustainable because more types of organisms can fulfill the same niche.
    Ecosystem B is more sustainable because it is less complex of a food web.
    Ecosystem B is more sustainable because it is more likely to survive a drought.
    30s
  • Q3
    The presence of permafrost (frozen soil) makes little water available in the tundra biome, biodiversity in this ecosystem
    Is limited to plants that grow low to the ground and require very little water
    Is limited to trees that loose their leaves in the winter to conserve water
    Is limited to tall cone shaped trees that allow snow to roll off
    30s
  • Q4
    The rainforest has an extremely high number of plants and animal species because
    it receives very little rainfall and lots of radiant energy
    it receives very little rainfall and lots of chemical energy
    it receives lots of rainfall and lots of radiant energy.
    30s
  • Q5
    Which of the following are the most important abiotic factors that determine the biodiversity of the organisms that live in a particular biome?
    Temperature and wind
    Moisture and soil type
    Altitude and air pressure
    Rainfall and temperature
    30s
  • Q6
    Different environments can have similar organism energy roles. Beetles on the forest floor of San Antonio might occupy the same niche as:
    lions of the grasslands of Africa
    ants in our school yard
    birds in the canopy of the tropical rainforest of South America
    corals in the tropical oceans of Hawaii
    30s
  • Q7
    An extremely cold, dry land biome is the
    tundra.
    tropical rain forest.
    deciduous forest.
    30s
  • Q8
    Knowing the type of food consumed by an organism helps to identify the role of the organism in the community. This role is known as its
    niche
    nesting site
    territorial range
    biomass
    30s
  • Q9
    Which microhabitat would be best suited for Blue Jay (bird)?
    forest floor covered in dead leaves
    rotting oak tree stump
    dry creek bed
    tall oak tree
    30s
  • Q10
    Many more species of plants and animals live in a tropical forest than live in a desert. This difference is most likely due to the fact that, compared to a tropical forest, a desert
    contains less water
    has less available sunlight
    contains soil with sand
    30s
  • Q11
    Which of the food chains would be possible in this microhabitat?
    Question Image
    butterflybeetlebarkflower
    snakemouseantgrass
    flowerbutterflyspidersnake
    30s
  • Q12
    The maintenance of a self-sustaining ecosystem requires a
    cycling of materials between organisms and their environment. They have the right RESOURCES like water, food, and temperature.
    constant temperature
    greater number of herbivores than producers
    soil that is acidic
    30s
  • Q13
    Otters have adaptive traits that allow them to survive by eating shellfish (shrimp) and crustaceans (crabs). If changes in biotic factors of the ecosystem result in reduced number of shellfish and crustaceans, the otters will most likely
    Adapt to a different ecosystem
    Increase reproduction rates
    Change the genetic makeup of their bodies
    Experience a population decline
    30s
  • Q14
    If all of the frogs in the two ecosystems died due to a virus how would this effect the ecosystems shown in the diagrams above?
    Question Image
    The top level consumers in Web A would die due to lack of food.
    Ecosystem A has more biodiversity so it would be sustainable.
    Ecosystem B would be sustainable because it has a lot of biodiversity.
    30s
  • Q15
    In the diagram below, which level of organisms contains the greatest amount of available energy?
    Question Image
    d
    b
    c
    a
    30s

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