Plant Water Transport: Xylem Vessels and Tracheids
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Questions and Answers

What is the primary function of xylem vessels in flowering plants?

  • Storing nutrients
  • Transporting sugars
  • Synthesizing proteins
  • Transporting water (correct)
  • Through which component do water and minerals primarily travel from the soil to the leaves?

  • Cambium
  • Phloem
  • Xylem (correct)
  • Epidermis
  • Which layer of cells is the outermost in the root?

  • Epidermis (correct)
  • Root Xylem
  • Root Cortex
  • Endodermis
  • What is the main characteristic of tracheids?

    <p>Have no open ends to form vessels</p> Signup and view all the answers

    Which substance in xylem vessels helps in keeping the plant upright?

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

    In which form do plants take in minerals?

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

    Study Notes

    Xylem Vessels

    • Lack cytoplasm and nuclei
    • Contain lignin, a hard and strong substance that maintains plant uprightness
    • Have unthickened cellulose cell walls with pits
    • Responsible for water transport in flowering plants

    Tracheids

    • Long, thin, spindle-shaped cells with pits
    • Allow water flow from one cell to another through pits
    • Do not form vessels due to closed ends
    • Characterized by pits in their cell walls for water passage
    • The sole water-conducting tissue in non-flowering plants

    Transport Mechanism

    • Epidermis: the single-layered outermost cell layer in the root
    • Endodermis: the innermost cortex layer surrounding vascular tissues (xylem and phloem)
    • Root Cortex: the cells between the epidermis and endodermis
    • Root Xylem: the xylem tissue in roots
    • Water must pass through the epidermis, root cortex, and endodermis to reach the root xylem

    Minerals

    • Plants absorb minerals in their inorganic form as nitrates and phosphates
    • Minerals in soil dissolve in water, creating a solution
    • When water is transported to leaves, dissolved minerals are also transported

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    Description

    Learn about the structure and function of xylem vessels and tracheids in plant water transport. Understand the role of lignin, cellulose, and pits in these cells.

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