Food for Thought
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Questions and Answers

What is the source of energy and materials for living things?

  • Water
  • Oxygen
  • Food (correct)
  • Sunlight

    • What is the general requirement for energy and materials in living organisms?

  • Energy from sunlight
  • Complex substances obtained from outside (correct)
  • Simple food material obtained from inorganic sources
  • None of the above

    • What is photosynthesis?

  • The process by which autotrophs convert carbon dioxide into oxygen
  • The process by which heterotrophs break down complex substances into simpler ones
  • The process by which autotrophs convert substances from the outside into stored forms of energy (correct)
  • The process by which heterotrophs obtain their food

    • What is the internal energy reserve in plants?

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

    What is the process by which autotrophs take in substances from the outside and convert them into stored forms of energy?

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

    Which organisms use simple food material obtained from inorganic sources?

    <p>Green plants and some bacteria</p> Signup and view all the answers

    What is the process by which autotrophs convert substances from the outside into stored forms of energy?

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

    What are the two simple substances taken in by autotrophs during photosynthesis?

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

    How do heterotrophic organisms obtain their food?

    <p>They utilize complex substances, which have to be broken down into simpler ones with the help of enzymes.</p> Signup and view all the answers

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