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General Biology: Energy Flow and Organism Types

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  • What are producers in an ecosystem?

    Producers use the sun’s energy to make their own food.

  • Define autotroph.

    An autotroph is any organism that can produce its own food supply, also called a producer.

  • Give examples of autotrophs.

    Examples include plants, algae, some protists, and some bacteria.

  • What are heterotrophs?

    Heterotrophs obtain energy by eating other organisms.

  • What do herbivores eat?

    Herbivores eat only plants.

  • What do carnivores eat?

    Carnivores eat only other animals.

  • What do omnivores eat? Give an example.

    Omnivores eat both plants and animals. Humans are an example.

  • What are detritivores?

    Detritivores feed on dead plant and animal remains, such as buzzards.

  • What role do decomposers play in an ecosystem?

    Decomposers, like fungi and bacteria, finish the scavenger’s job by breaking down dead matter.

  • Define a food chain.

    A food chain is a simple energy path through an ecosystem.

  • What is a food web?

    A food web is a more realistic energy path made of many interconnected food chains.