Xylem and Phloem in Vascular Plants
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Questions and Answers

What is the basic function of xylem?

  • Transport nutrients from leaves to roots
  • Assist in photosynthesis process
  • Support the plant structure
  • Transport water from roots to stems and leaves (correct)

    • Which cells are the most distinctive xylem cells that transport water?

  • Parenchyma
  • Fibers
  • Tracheary elements (correct)
  • Vessel elements

    • What type of xylem is formed during primary growth from procambium?

  • Tertiary xylem
  • Transitional xylem
  • Primary xylem (correct)
  • Secondary xylem

    • What is the term for the xylem tissue laid down by a meristem called the vascular cambium in woody plants?

    <p>Secondary xylem</p> Signup and view all the answers

    What is the branching pattern exhibited by xylem known as?

    <p>Murray's law</p> Signup and view all the answers

    Who introduced the term 'xylem' and in what year?

    <p>Carl Nägeli introduced the term 'xylem' in 1858.</p> Signup and view all the answers

    What is the meaning of the word 'xylem' derived from?

    <p>The word 'xylem' is derived from the Ancient Greek word ξύλον (xylon), meaning 'wood'.</p> Signup and view all the answers

    What are the two other types of cells found in xylem, besides tracheary elements?

    <p>Parenchyma and fibers are the two other types of cells found in xylem.</p> Signup and view all the answers

    Where can xylem be found in plants?

    <p>Xylem can be found in vascular bundles, present in non-woody plants and non-woody parts of woody plants, in secondary xylem laid down by a meristem called the vascular cambium in woody plants, and as part of a stelar arrangement not divided into bundles, as in many ferns.</p> Signup and view all the answers

    What are the two types of xylem formed during primary growth from procambium?

    <p>Primary xylem includes protoxylem and metaxylem.</p> Signup and view all the answers

    Study Notes

    Xylem Functions and Characteristics

    • The basic function of xylem is to transport water.

    Xylem Cells

    • Tracheary elements are the most distinctive xylem cells that transport water.

    Xylem Formation

    • Primary xylem is formed during primary growth from procambium.
    • Secondary xylem is the tissue laid down by a meristem called the vascular cambium in woody plants.

    Xylem Structure

    • The branching pattern exhibited by xylem is known as dichotomous branching.

    History of Xylem

    • The term 'xylem' was introduced by Carl Wilhelm von Nägeli in 1858.

    Etymology of Xylem

    • The word 'xylem' is derived from the Greek word xylon, meaning wood.

    Xylem Composition

    • Besides tracheary elements, xylem also contains parenchyma cells and sclerenchyma cells.

    Xylem Location

    • Xylem can be found in plants, responsible for water transport.

    Types of Xylem

    • The two types of xylem formed during primary growth from procambium are protostele and siphonostele.

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    Description

    Test your knowledge about the structure and function of xylem, one of the two types of transport tissue in vascular plants, responsible for transporting water and nutrients from roots to stems and leaves. Learn about the history and terminology associated with xylem.

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