Sexual and Human Reproduction: Stamen and Pollen Grain
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Questions and Answers

What is the terminal structure of a stamen called?

  • Petal
  • Filament
  • Anther (correct)
  • Thalamus

    • If you were to collect a stamen from ten different flowers, what would you observe regarding size?

  • Consistent size in all stamens
  • Large variation in size (correct)
  • No variation in size
  • Slight variation in size

    • In a typical angiosperm anther, how many theca does each lobe have?

  • Four theca (correct)
  • Three theca
  • One theca
  • Five theca

    • What distinguishes the transverse section of an anther?

    <p>Tetragonal structure</p> Signup and view all the answers

    What do microsporangia develop into?

    <p>Pollen sacs</p> Signup and view all the answers

    Where are pollen grains packed in the anther?

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

    What is the main function of the outer three wall layers of a microsporangium?

    <p>Provide protection and assist in pollen release</p> Signup and view all the answers

    Which wall layer of a microsporangium nourishes the developing pollen grains?

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

    How do tapetal cells become bi-nucleate?

    <p>Possessing more than one nucleus initially</p> Signup and view all the answers

    What occupies the centre of each microsporangium when the anther is young?

    <p>Sporogenous tissue</p> Signup and view all the answers

    What process occurs as the anther develops in microsporogenesis?

    <p>Meiotic divisions of sporogenous tissue cells</p> Signup and view all the answers

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