BIO330.docx - 3 Describe each of the following as a...

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3. Describe each of the following as a producer, consumer or decomposer. a) Breaks down leaf litter- Decomposer b) Does not need to consume other organisms to live- Producer c) First level in energy flow through an ecosystem- Producer d) May consume another consumer- Consumer e) Assists in biodegradation- Decomposer 4. Draw a food chain that contains the following organisms in a freshwater lake ecosystem (2 o consumer) Tilapia (Producer) Algae (3 o consumer) Stork (1 o consumer) Water Strider
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4. Explain the existence of limited number of trophic levels in ecosystem. At each trophic level in a food chain, a large portion of the energy is utilized for the maintenance of organisms which occur at that trophic level and lost as heat. As a result of this,
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  • Winter '13
  • Ecology, trophic level, existence of limited number of trophic levels

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Christopher Reinemann
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