Ecological Concepts Quiz
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Questions and Answers

What is the main energy source for life on earth?

  • Wind
  • Sunlight (correct)
  • Geothermal energy
  • Water
  • Which organisms perform chemosynthesis to produce carbohydrates?

  • Fungi
  • Plants
  • Animals
  • Bacteria (correct)
  • What do scavengers primarily feed on in an ecosystem?

  • Plants
  • Decaying organic matter (correct)
  • Live animals
  • Sunlight
  • Which type of consumers primarily depend on plants for their food?

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

    What type of consumers primarily eat the flesh and meat of other living animals?

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

    Which organisms are known as the 'cleaners of the environment'?

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

    What term describes a relationship in which one organism captures and feeds on another organism?

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

    Which type of relationship in symbiosis benefits both species involved?

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

    What is the functional role that an organism plays within an ecosystem called?

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

    Which principle states that two different species cannot occupy the same niche in the same place for very long?

    <p>Competitive exclusion principle</p> Signup and view all the answers

    In a parasitic relationship, which organism benefits while the other is harmed?

    <p>The parasite benefits</p> Signup and view all the answers

    What type of relationship is represented by one member benefiting while the other is neither helped nor harmed?

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

    What is the main difference between bioaccumulation and biomagnification?

    <p>Bioaccumulation occurs in a single organism over its life, while biomagnification happens within a food web.</p> Signup and view all the answers

    How does predation affect community composition and species diversity?

    <p>Predation greatly reduces prey population density and decreases species diversity.</p> Signup and view all the answers

    According to the law of thermodynamics, what does the Second Law of Thermodynamics state?

    <p>Energy tends to go from a more organized and concentrated form to a less organized and more dispersed form.</p> Signup and view all the answers

    How does the law of conservation of mass (matter) apply to ecology?

    <p>Matter is neither created nor destroyed in ecological processes.</p> Signup and view all the answers

    How do keystone species impact ecosystem adaptation to environmental changes?

    <p>If a keystone species disappears, ecosystems might not be able to adapt to environmental changes.</p> Signup and view all the answers

    What role does competition play in ecosystems?

    <p>Competition arises when resources are in limited supply and organisms strive to obtain these resources.</p> Signup and view all the answers

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