Structure of Dicot Roots
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Questions and Answers

What distinguishes the xylem arrangement in dicot roots from that in monocot roots?

  • Xylem is polyarch in dicot roots.
  • Xylem is arranged in a ring in monocot roots.
  • Xylem is scattered in monocot roots.
  • Xylem is radial in dicot roots. (correct)

    • Which characteristic of dicot roots differs in structuring compared to monocot roots?

  • Dicot roots have a well-developed pith.
  • Dicot roots have endodermis that is single layered. (correct)
  • Dicot roots have a cortex with smaller parenchymatous cells.
  • Dicot roots have phloem that is scattered.

    • Which statement correctly describes the pith in dicot roots?

  • The pith is small and poorly developed. (correct)
  • The pith is large and well-developed.
  • The pith is filled with starch grains.
  • The pith is absent in all types of roots.

    • How does phloem arrangement compare between dicot and monocot roots?

    <p>Phloem is arranged in an alternating manner in dicot roots.</p> Signup and view all the answers

    What type of cells primarily make up the epidermis of dicot roots?

    <p>Thin-walled parenchyma cells.</p> Signup and view all the answers

    Study Notes

    Structure of a Dicot Root

    • The epidermis serves as the protective outer layer, composed of thin-walled parenchyma cells.
    • The cortex is made up of large parenchymatous cells filled with starch grains, providing storage functions.
    • The endodermis is the innermost layer of the cortex, consisting of a single layer of cells responsible for regulating water and nutrient movement.
    • The vascular bundle features a central xylem surrounded by alternating phloem, essential for the transport of water and nutrients.
    • Pith in dicot roots is small and not well-developed, differing from many other plant types.

    Differences Between Dicot and Monocot Roots

    • Dicot roots feature radial xylem, whereas monocot roots exhibit a polyarch arrangement.
    • In dicots, phloem is organized in an alternating pattern, while in monocots, it is scattered throughout.
    • The pith is relatively small in dicots, contrasting with the large pith found in monocots.
    • Dicot roots have a single-layered endodermis, whereas monocot roots contain a multiple-layered endodermis.

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    Description

    Explore the intricate structure of dicot roots in this quiz. Learn about the layers such as epidermis, cortex, endodermis, vascular bundles, and pith. Test your knowledge on the functions and characteristics of each component.

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