Ecosystems mcq
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Questions and Answers

What is an ecosystem?

  • A place where only plants live
  • All the living and non-living things in an area and their interactions (correct)
  • Only the non-living parts of the environment
  • A community of only animals living together
  • Which of the following is an abiotic factor?

  • Plants
  • Animals
  • Soil (correct)
  • Microorganisms
  • What are decomposers?

  • Organisms that make their own food
  • Organisms that hunt and kill other animals
  • Organisms that break down dead matter (correct)
  • Organisms that compete for the same resources
  • In a food chain, what is the role of a producer?

    <p>To make their own food through photosynthesis</p> Signup and view all the answers

    Which of the following is a biotic factor in an ecosystem?

    <p>Plants</p> Signup and view all the answers

    What effect does red tide algae have on marine life?

    <p>produces toxins that paralyze and kill fish</p> Signup and view all the answers

    Which of the following statements about food webs is true?

    <p>They consist of interconnected food chains</p> Signup and view all the answers

    What can happen to an ecosystem if one species is removed?

    <p>can disrupt the balance and affect other species</p> Signup and view all the answers

    Which abiotic factor is essential for photosynthesis in plants?

    <p>Light</p> Signup and view all the answers

    Which of the following is an example of a predator-prey relationship?

    <p>Lion and zebra</p> Signup and view all the answers

    Which factor is most likely to cause a decrease in the population of predators?

    <p>Decrease in prey population</p> Signup and view all the answers

    What role do decomposers play in the nutrient cycle?

    <p>They break down dead matter and return nutrients to the soil</p> Signup and view all the answers

    How does temperature affect cold-blooded animals?

    <p>Their activity level varies with the surrounding temperature</p> Signup and view all the answers

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