Introduction to Ecology
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Questions and Answers

What does the term 'ecology' refer to?

  • The division of science that studies the relationships between living organisms and their surroundings. (correct)
  • The analysis of energy flow in various ecosystems.
  • The study of the distribution of living organisms around the globe.
  • The scientific study of how ecosystems balance themselves.

    • Which option best describes a community in an ecosystem?

  • The physical and chemical environment where organisms live.
  • The total number of all the organisms in an ecosystem. (correct)
  • The total number of a single species within an area.
  • The interactions between different populations and their environment.

    • Which term describes the number of a single species in an ecosystem?

  • Community
  • Biodiversity
  • Ecosystem
  • Population (correct)

    • What is the main function of photosynthesis in producers?

    <p>To convert light energy into food</p> Signup and view all the answers

    What comprises an ecosystem?

    <p>The living organisms and their physical/chemical environment.</p> Signup and view all the answers

    Which of the following is a byproduct of photosynthesis?

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

    In the ecosystem diagram, which layer represents a population?

    <p>The layer showing a single species, like deer.</p> Signup and view all the answers

    In aquatic ecosystems, which organisms are primarily responsible for photosynthesis?

    <p>Microscopic organisms like algae and cyanobacteria</p> Signup and view all the answers

    What chemical process allows plants to use the stored energy from sugars?

    <p>Cellular respiration</p> Signup and view all the answers

    Which statement is true regarding plants that do not photosynthesize?

    <p>They rely on fungi for energy.</p> Signup and view all the answers

    What is the primary energy source for organisms on Earth?

    <p>Radiant energy from the sun</p> Signup and view all the answers

    What percentage of radiant energy is absorbed by the Earth's surface?

    <p>70%</p> Signup and view all the answers

    Which process do producers primarily use to convert light energy into chemical energy?

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

    What is released as a byproduct during photosynthesis?

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

    Which organisms are primarily responsible for photosynthesis in aquatic ecosystems?

    <p>Algae and cyanobacteria</p> Signup and view all the answers

    What compounds do producers convert during photosynthesis?

    <p>Carbon dioxide and water</p> Signup and view all the answers

    What is the main function of chlorophyll in producers like plants?

    <p>To capture light energy</p> Signup and view all the answers

    What is the end product of the equation for photosynthesis?

    <p>Glucose and oxygen</p> Signup and view all the answers

    What is the primary role of green plants in an ecosystem?

    <p>To produce carbohydrates and oxygen through photosynthesis</p> Signup and view all the answers

    What is produced by both cellular respiration and photosynthesis?

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

    If a person holds their breath, which process is directly affected by the lack of oxygen?

    <p>Cellular respiration</p> Signup and view all the answers

    Why is oxygen essential for animals?

    <p>It allows the breakdown of food for energy.</p> Signup and view all the answers

    What disadvantage could a plant face due to its ability to perform photosynthesis?

    <p>Higher competition for sunlight</p> Signup and view all the answers

    What substance is commonly thought to be produced during the process of cellular respiration?

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

    How do plants utilize the products of photosynthesis?

    <p>For various biochemical processes</p> Signup and view all the answers

    Which statement accurately describes the flow of energy through an ecosystem?

    <p>Energy flows in only one direction.</p> Signup and view all the answers

    What is the main requirement for photosynthesis to occur in plants?

    <p>Sufficient water and carbon dioxide</p> Signup and view all the answers

    What role do decomposers play in an ecosystem?

    <p>They break down organic matter</p> Signup and view all the answers

    What is the primary function of cellular respiration in plants?

    <p>To release energy stored in sugar</p> Signup and view all the answers

    Which of the following is NOT a product of cellular respiration?

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

    Why is cellular respiration considered a continuous process?

    <p>All of the above</p> Signup and view all the answers

    What chemical is prevented from entering the body when you hold your breath?

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

    Holding your breath results in a feeling of needing to breathe because:

    <p>Cellular respiration is slowing down due to lack of oxygen.</p> Signup and view all the answers

    What observation provides direct evidence that carbon dioxide is produced during cellular respiration?

    <p>The limewater turns cloudy when you breathe into it.</p> Signup and view all the answers

    Which of the following statements best describes the relationship between photosynthesis and cellular respiration?

    <p>They are complementary processes that involve the conversion of energy.</p> Signup and view all the answers

    What is the primary role of consumers in an ecosystem?

    <p>To obtain energy by eating other organisms</p> Signup and view all the answers

    How are producers and consumers fundamentally different in their energy acquisition?

    <p>Producers obtain energy from sunlight, while consumers obtain energy from other organisms.</p> Signup and view all the answers

    Which of the following is a true statement about cellular respiration?

    <p>Cellular respiration releases energy stored in food.</p> Signup and view all the answers

    Study Notes

    Key Terms

    • Ecology: The branch of science studying the relationships between living organisms and their surroundings.
    • Ecosystem: All living organisms and their physical environment. (Examples include: boreal forest, log, stream, under a rock)
    • Population: The number of a single species in an ecosystem.
    • Community: The total number of all organisms in an ecosystem.

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    Description

    Explore the fundamental concepts of ecology in this quiz. Understand the relationships between organisms and their environments, along with key terms like ecosystem, population, and community. Test your knowledge on important ecological terminology and principles.

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