Explore how energy moves through ecosystems via food chains and food webs, and understand the roles of producers, consumers, and decomposers.

Answer in complete sentences. Use vocabulary, producer, consumer, decomposer, predator, prey, herbivore, carnivore, omnivore.

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Trace energy flow through food chains and describe how organisms depend on each other.

Biology - Grade 4-5

Instructions Answer in complete sentences. Use vocabulary, producer, consumer, decomposer, predator, prey, herbivore, carnivore, omnivore.
  1. 1
    A green plant growing in soil with sunlight shining on it.

    What is a producer? Give one example.

  2. 2
    Grass points to a rabbit, and the rabbit points to a hawk in a simple food chain.

    A rabbit eats grass, and a hawk eats the rabbit. Write this as a food chain.

  3. 3
    Mushrooms and earthworms break down dead leaves and a log into soil nutrients.

    What role do decomposers play in an ecosystem?

  4. 4
    A bear is shown with berries, fish, honeycomb, and plants around it.

    Is a bear a herbivore, carnivore, or omnivore? Explain.

  5. 5
    A hawk looks over a grassy area with very few signs of rabbits.

    If all the rabbits in an ecosystem disappeared, what might happen to the hawk population?

  6. 6
    Sunlight goes to a plant, and the plant provides food for a small animal.

    Why do all food chains start with plants (or other producers)?

  7. 7
    A forest with cut trees and a polluted stream shows human harm to an ecosystem.

    Name two ways humans can negatively affect an ecosystem.

  8. 8
    A single food chain is shown beside a more complex food web with many connected organisms.

    What is the difference between a food chain and a food web?

LivePhysics™.com Biology - Grade 4-5