Seed Development and Germination Processes
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Questions and Answers

Which of the following statements about the exine of a pollen grain is NOT true?

  • It serves to protect the pollen grain from environmental stresses
  • It has a uniform structure without any patterns or designs (correct)
  • It is made up of sporopollenin, a highly resistant organic material
  • It can withstand high temperatures and strong acids and alkali

    • What is the primary function of the germ pores in a pollen grain?

  • To allow the pollen tube to emerge during germination (correct)
  • To provide structural support to the pollen grain
  • To aid in the dispersal of pollen grains by wind or insects
  • To facilitate the exchange of gases during pollen development

    • Which of the following statements regarding the intine of a pollen grain is correct?

  • It is made up of sporopollenin, similar to the exine
  • It is responsible for the patterns and designs seen on the pollen grain surface
  • It is composed of cellulose and other carbohydrates (correct)
  • It is the outermost layer of the pollen grain wall

    • What is the primary reason for the exceptional preservation of pollen grains as fossils?

    <p>The presence of sporopollenin in the exine, which is highly resistant</p> Signup and view all the answers

    Why is it important for the exine of a pollen grain to be hard?

    <p>To protect the pollen grain from environmental stresses and desiccation</p> Signup and view all the answers

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