STU1043 Plant Physiology LU5: Respiration in Plants 1
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Questions and Answers

What is the primary purpose of respiration in plants?

  • To convert water and CO2 into food
  • To produce glucose for energy storage
  • To produce oxygen for metabolic processes
  • To break down stored food to obtain energy (correct)

    • What are the waste products produced during plant respiration?

  • Starch and sucrose
  • Water and CO2 (correct)
  • Glucose and oxygen
  • Fructose and glucose

    • Which of the following is a primary respiratory substrate in cells of higher plants?

  • Cellulose
  • Starch (correct)
  • Sucrose
  • Fructose

    • What happens to glucose during plant respiration?

    <p>It is oxidized to CO2</p> Signup and view all the answers

    When does respiration in plants occur?

    <p>Both during the day and night</p> Signup and view all the answers

    What is the main purpose of aerobic respiration in plants?

    <p>To produce energy with the help of oxygen</p> Signup and view all the answers

    During which stage does the conversion of fats to sucrose occur in plant respiration?

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

    What is the principal form in which organic materials are translocated within the plant body?

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

    Where does glycolysis occur in plant respiration?

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

    What is the end product of glycolysis in plant respiration?

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

    Which stage of respiration occurs under either aerobic or anaerobic conditions?

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

    What is lost as CO2 during the conversion of pyruvate into acetyl-CoA in plant respiration?

    <p>Carboxyl group</p> Signup and view all the answers

    Where does the Krebs Cycle occur in plant respiration?

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

    In which phase of the Krebs Cycle is oxaloacetate regenerated?

    <p>Loss of CO2 from citrate to regenerate oxaloacetate</p> Signup and view all the answers

    What is the role of NADH in aerobic respiration?

    <p>To generate ATP during the Electron Transport Chain</p> Signup and view all the answers

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