Seed Plants: Angiosperms Lecture Outline
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Questions and Answers

What distinguishes angiosperms from other plants?

  • Having DNA and cladistic evidence for classification
  • Being dependent on sporophyte for gametophyte
  • Having true roots, leaves, stems, flowers, fruits, and seeds
  • Seeds enclosed in carpel resembling a folded leaf (correct)

    • What is the composition of a pistil in angiosperms?

  • No pistil composition in angiosperms
  • Multiple carpels with different shapes and sizes
  • Single carpel, or two or more united carpels (correct)
  • Carpel joined to the calyx

    • What becomes a fruit in angiosperms?

  • Pistil
  • Ovary (correct)
  • Carpel
  • Ovule

    • Which division do bleeding hearts belong to?

    <p>Magnoliophyta or Anthophyta</p> Signup and view all the answers

    What does DNA and cladistic evidence suggest regarding dicots?

    <p>Two groups of dicots should be recognized</p> Signup and view all the answers

    What is the distinctive feature of true stems in angiosperms?

    <p>Bamboo stems</p> Signup and view all the answers

    What is the most primitive flower characterized by?

    <p>Long receptacle and many spirally arranged flower parts</p> Signup and view all the answers

    In the development of female gametophytes in Phylum Magnoliophyta, how many nuclei are produced after meiosis of the diploid megasporocyte?

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

    What is the function of the generative nucleus in the male gametophyte of a flowering plant?

    <p>Divides to form two sperm cells</p> Signup and view all the answers

    What is the primary purpose of pollination in flowering plants?

    <p>To transfer pollen grains from anther to stigma</p> Signup and view all the answers

    In Phylum Magnoliophyta, where does the fertilization process occur?

    <p>Within the ovule</p> Signup and view all the answers

    What is the fate of the female gametophyte (megagametophyte) after fertilization in a typical flowering plant?

    <p>It nourishes the developing seed</p> Signup and view all the answers

    What is the role of male gametophytes in a typical flowering plant?

    <p>To facilitate fertilization</p> Signup and view all the answers

    Which structure differentiates into integuments that later become the seed coat in Phylum Magnoliophyta?

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

    How many nuclei are present in the female gametophyte (megagametophyte) of a typical flowering plant at maturity?

    <p>8 nuclei and 7 cells</p> Signup and view all the answers

    What is the significance of the micropyle in an ovule of a flowering plant?

    <p>Allows entry of pollen to reach the egg cell</p> Signup and view all the answers

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