Energy Flow in Ecosystems 2.1

  1. The amount of energy in the producer level limits the number of consumers the _________________ can support.
  2. When an organism in an ecosystem ________, it obtains energy.
  3. At each level in a food pyramid, there is less available __________ than the level below.
  4. A food web consists of many interconnected _______ __________.
    food chains
  5. The most energy available is at the __________________ level.
  6. Consumers that eat animals are called _________________ .
  7. A _____________________ consists of many overlapping food chains in an ecosystem.
    food web
  8. Organisms that break down wastes and dead organisms and return the raw materials to the environment are ________________________. 
    • decomposers
    • (example: bacteria)
  9. A consumer that eats both plants and animals is called an_________________.
  10. Consumers that eat only plants are called________________________.
  11. An organism that makes its own food is called a ____________________.
    producer or autotroph
  12. A ___________________ is a series of events in which one organism eats another and obtains energy.
    food chain
  13. A ______________________is a carnivore that feeds on the bodies of dead organisms.
  14. An organism that obtains energy by feeding on other organisms is a _____________________.
  15. A diagram that shows the amount of energy that moves from one feeding level to another in a food web is called an _____________________.
    energy pyramid
  16. What are 4 types of consumers (eaters)?
    • 1.herbivores
    • 2.carnivores
    • 3.omnivores
    • 4.scavengers
  17. What are the 3 major energy roles, or jobs, an organism may play in an ecosystem?
    • 1.producer
    • 2.consumer
    • 3.decomposer
  18. How does the amount of available energy change from one level of an energy pyramid to the next level up?
    Each organism uses 90% of the energy for its own life processes. Only 10% is available to the next-level consumer. Therefore, there is less energy available at each level going up the energy pyramid. 
  19. An ecosystem on earth in which producers do not depend on sunlight for energy in the food making process is one that exists around deep-ocean hydrothermal vents known as ____________  ____________. Bacteria in this ecosystem use chemicals that come from these vents to help make their own food. Giant clams and shrimp consume the bacteria the bacteria in this ecosystem for food.
    black smokers
  20. Energy is measured in __________________.
    kilocalories or kcal
  21. There are usually __________ organisms at the highest level in a food web.
  22. The amount of energy available at the producer level of an energy pyramid limits the number of ____________that the ecosystem is able to support.
  23. Is it better for an organism to be part of a food chain or food web? Explain why? 
    Organisms that belong to only one food chain are at risk of a link being broken, so risk losing energy and risk of survival.

    If an organism is part of a food web it has a more diverse diet, therefore, a much better chance of survival.
Card Set
Energy Flow in Ecosystems 2.1
Energy Flow in Ecosystems