Endosperm and Embryo Development in Seeds Quiz
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Questions and Answers

What is the function of the micropyle in a seed?

  • Serves as a protective layer for the seed coat
  • Regulates germination by allowing entry of oxygen and water (correct)
  • Enhances photosynthesis in the seed
  • Helps in dispersal of seeds
  • What is the moisture content of seeds when they become relatively dry?

  • 5-10 per cent
  • 20-25 per cent
  • 10-15 per cent (correct)
  • 30-35 per cent
  • What is the term used to describe the state of inactivity that the embryo may enter during seed maturation?

  • Dormancy (correct)
  • Photosynthesis
  • Pollination
  • Germination
  • Which part of the flower contributes to fruit formation in species like apple and strawberry?

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

    What is the wall of the ovary transformed into during fruit development?

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

    What is the relationship between the number of ovules in an ovary and the number of seeds in a fruit?

    <p>Depends on the plant species</p> Signup and view all the answers

    What is the term used to describe the cotyledon in the grass family?

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

    Which part of the seed is generally thick and swollen due to storage of food reserves?

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

    What is the term for the undifferentiated sheath that encloses the radical and root cap in an embryo?

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

    Which part of the embryonal axis contains the shoot apex and leaf primordia?

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

    Which type of seeds have no residual endosperm after embryo development?

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

    In angiosperms, what is often described as a fertilized ovule?

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

    What is the fate of the endosperm in seeds like peas, groundnuts, and beans?

    <p>It is completely consumed by the developing embryo before seed maturation.</p> Signup and view all the answers

    Which seeds show persistence of endosperm in the mature seed to be used during seed germination?

    <p>Castor and coconut</p> Signup and view all the answers

    Where does the zygote develop in the embryo sac?

    <p>At the micropylar end</p> Signup and view all the answers

    Why do most zygotes divide only after a certain amount of endosperm is formed?

    <p>To provide nutrition to the developing embryo</p> Signup and view all the answers

    Which part of a dicotyledonous embryo terminates at its lower end with the radicle or root tip?

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

    What covers the root tip of a dicotyledonous embryo?

    <p>Root cap</p> Signup and view all the answers

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