Game Preview

chapter 2 principles of ecology

  •  English    22     Public
    biology
  •   Study   Slideshow
  • Referring to the figure, suppose 10 000 units of energy are available at the level of the grasses. What is the total number of energy units lost by the time energy reaches the owl?
    9990 units
  •  25
  • Which organism shown in the pyramid receives the highest percentage of energy from the Sun?
    Buffalo grass (producer)
  •  15
  • The organism shown is involved in which type of symbiosis?
    parasitism
  •  20
  • The organisms growing on the tree bark are ________. (producers, autotrophs, detritivores, decomposers, carnivores)
    decomposers
  •  15
  • In the energy pyramid, which level has the smallest number of organisms?
    shark 
  •  15
  • What type of cycle is shown in the figure?
    Phosphorus cycle
  •  10
  • The group of animals in the figure is an example of which level of ecological organization?
    population
  •  20
  • Where is the biosphere in the figure? What is that layer called?
    A - the earth's crust
  •  20
  • Any close and long-lasting association among organisms of different species is called __________.
    symbiosis
  •  25
  • _____ is a simple model used to show how matter and energy move through an ecosystem.
    Food chain
  •  20
  • A(n)___________ is made up of interactions among the populations in a community and the community’s abiotic factors.
    ecosystem
  •  20
  • __________ are organisms that use energy from the sun or energy stored in chemical compounds to manufacture their own nutrients.
    Autotrophs
  •  20
  • ____________ is the role or position a species has in its environment
    Niche
  •  15
  • In the food web shown, which of the organisms are herbivores?
    rabbit, mouse, grasshopper
  •  20
  • Which of the following would most decrease the amount of carbon dioxide in the air?(A. a growing maple tree B. a running dog C. a person driving a car D. a burning forest)
    A
  •  15
  • Which of the following describes energy and matter in ecosystems?
    B
  •  20