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Which of the organisms in the above diagram represents the Tertiary Consumer? Use the diagram on the right to answer the following questions: Who is the producer in this food web? Algae How many different food chains 6 involve Squid? What are they? algae small animals squid elephant seal killer whale algae squid killer whale algae squid leopard seal killer whale algae small animals squid elephant seal leopard seal killer whale algae small animals squid killer whale algae small animals squid leopard seal killer whale Each organism in a food chain represents a feeding step, or Tropic Level, in the passage of energy and materials Use the sheet at your table to illustrate an example of an ecological pyramid by placing each food chain card at the appropriate trophic level on the Ecological Pyramid. Copy the ecological pyramid of energy you created into your biology notebook. Create a table like the one above in your biology notebook. Using your filled-in pyramid, write the name of the organism on each food chain card in the appropriate column in the table. Ecologists often illustrate the flow of energy through ecosystems with an energy pyramid. Only about 10% of the energy at any tropic level is transferred to the next tropic level. Much of the energy obtained from food (90%) is used for metabolism or lost to the environment in the form of heat. In the diagram above, which organisms are considered primary consumers In the diagram above, which organisms are considered secondary consumers Which organisms are considered both secondary and tertiary consumers? Using what we know about energy, how much energy would be available to the leopard seal using this food chain if algae begins with 250,000 units? 25 250 2,500 25,000 250,000 250 What about the killer whale? 25 What percentage (%) of energy is available at each trophic level in the above diagram? Explain the 10% rule of an ecosystem using the information from the ecological pyramid and the glossary. Which example, a food chain or a food web, represents a more realistic picture of the flow of matter and energy in an ecosystem? Support your answer.