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Guilherme Mazui

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What is the Difference Between Protostele and Siphonostele?

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The key difference between protostele and siphonostele lies in their structure:

  • Protostele: It consists of a solid core of vascular tissue without a central pith or leaf gaps. Protosteles are found in primitive vascular plants. There are three basic types of protostele: haplostele, plectostele, and actinostele.
  • Siphonostele: It comprises cylindrical vascular tissue that surrounds a central pith and includes leaf gaps. Siphonosteles are found in a variety of plants, including many ferns. They can be referred to as ectophloic or amphiphloic, with amphiphloic steles seen in Asterid flowering plants.

In summary:

  • Protostele: solid core of vascular tissue, no central pith, no leaf gaps.
  • Siphonostele: cylindrical vascular tissue, central pith, leaf gaps.
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  • What is the Difference Between Protostele and Siphonostele?
  • Comparative Table: Protostele vs Siphonostele

    • Comparative Table: Protostele vs Siphonostele

    The key difference between protostele and siphonostele lies in their structure. Here is a table comparing the two:

    Feature Protostele Siphonostele
    Definition A type of stele where the stem's vascular tissue forms a solid core, lacking leaf gaps or central pith. A type of stele where the stem's vascular tissue forms a cylinder girdling the central pith.
    Central Pith No Yes
    Types Haplostele, plectostele, actinostele. Solenostele, dictyostele, eustele.
    Distribution Present in primitive vascular plants. Present in flowering plants and ferns.
    • Protostele is a more primitive type of stele, while siphonostele is a modification of protostele.
    • Protostele consists of a solid core of vascular tissue and does not have a central pith or leaf gaps.
    • Siphonostele, on the other hand, comprises a cylindrical vascular tissue that encloses the central pith and includes leaf gaps.
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    Guilherme Mazui

    Guilherme Mazui is graduated in journalism from the Federal University of Minas Gerais (UFMG) and a master's degree in Communication from the University of São Paulo (USP). In addition, he has experience in advertising writing and has worked as a content editor in several companies.