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Into which categories would you place the following organisms on the food...

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dogcrazy | Student, Grade 11 | (Level 2) Honors

Posted October 14, 2009 at 12:35 PM via web

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Into which categories would you place the following organisms on the food chain?

the categories are: producers, herbivores(1st level consumers), 2nd level consumers, and 3rd level consumers, parasites, or decomposers.

List of organisms: daphnia, mayflies, steelhead salmon, common terns, herring gulls, alewives, diatom, desmids, cladophora, bacteria, water molds, bald eagles, zebra mussels, brown trout, chinook salmon, freshwater sponges, common goldeneyes, lake sturgeon, midges, moss animals, carp, bloaters, deepwater sculpins, lake trout, yellow perch, slippershells, copepods, deepwater ciscoes, planaria, snails, sea lampreys, and spiny water fleas

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mr-angel | College Teacher | (Level 2) Adjunct Educator

Posted October 16, 2009 at 1:57 PM (Answer #1)

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In order to answer this question, you need to know what each feeding type is.

  • Herbivores = plant eating organisms
  • 1st level consumers= organisms that consume producers (includes herbivores and others like algae eating organisms)
  • Producers - Algae, plants, other photosynthetic organisms that can use energy from the sun (or in more rare cases, chemicals) to make their own food.
  • 2nd level consumers - consume 1st level consumers
  • 3rd level consumers - consume 2nd level consumers
  • Parasites - organisms that live off of other organisms in a way that is harmful to the host organism but usually does not kill the host (examples: ticks, mosquito, tapeworm, hookworm)
  • Decomposers - organisms that consume dead organic matter.  Many fungi and bacteria are decomposers.  Most things that "rot" are being broken down by bacteria that feed on the organic material in dead organisms.  Think of where the dead leaves and grass goes.

I hope that by being able to classify each feeding type, you can use this guide to identify each organism.  Hope it helps with your homework!


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