Plant Tissue Overview
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Questions and Answers

What is the main function of meristematic tissue in plants?

  • To transport nutrients and water
  • To continuously form new cells (correct)
  • To provide structural support
  • To store energy
  • Where are apical meristems located?

  • At the base of the roots
  • Along the sides of the stems
  • At the tips of stems and roots (correct)
  • In the vascular cambium
  • What is the characteristic of meristematic cells regarding their arrangement?

  • They have thick cell walls
  • They are loosely arranged with large intercellular spaces
  • They are compactly arranged with no intercellular space (correct)
  • They contain multiple nuclei in each cell
  • Which type of meristematic tissue is responsible for secondary growth in plants?

    <p>Lateral meristems</p> Signup and view all the answers

    Which of the following is NOT a property of meristematic tissue?

    <p>Cells have thick cellulose walls</p> Signup and view all the answers

    What is the role of intercalary meristems in plants?

    <p>To facilitate growth at the nodes and leaf bases</p> Signup and view all the answers

    Meristematic cells contain few vacuoles or none at all. What is the significance of this characteristic?

    <p>It aids in faster cellular division</p> Signup and view all the answers

    The primary growth of a plant is mainly attributed to which type of meristem?

    <p>Apical meristems</p> Signup and view all the answers

    What are the two main categories of permanent tissue in plants?

    <p>Simple and Complex</p> Signup and view all the answers

    Which of the following characteristics is true of parenchyma cells?

    <p>They have living protoplasm and intercellular spaces.</p> Signup and view all the answers

    What primary function does parenchyma serve in the plant?

    <p>Storage and assimilation of food</p> Signup and view all the answers

    Which of the following is NOT a type of simple permanent tissue?

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

    How do complex permanent tissues differ from simple permanent tissues?

    <p>Complex tissues consist of multiple cell types coordinating for a function.</p> Signup and view all the answers

    Which of the following statements about sclerenchyma is correct?

    <p>It provides mechanical support due to its thick cell walls.</p> Signup and view all the answers

    Where is parenchyma tissue commonly found in plants?

    <p>In various soft parts like stems, roots, and fruits</p> Signup and view all the answers

    What role does parenchyma play in herbaceous plants?

    <p>It serves as food storage and provides support.</p> Signup and view all the answers

    What is a distinct characteristic of collenchyma cells compared to parenchyma cells?

    <p>Collenchyma cells have extra cellulose at the corners.</p> Signup and view all the answers

    Which of the following is true about sclerenchyma cells?

    <p>Sclerenchyma cells have thickened lignified walls.</p> Signup and view all the answers

    In which part of dicotyledon plants would you typically find collenchyma cells?

    <p>Below the epidermis of stems and petioles.</p> Signup and view all the answers

    What role does collenchyma play in a plant?

    <p>Provides mechanical support and elasticity.</p> Signup and view all the answers

    What is a common occurrence of sclerenchyma in plant tissues?

    <p>It is found in patches or definite layers.</p> Signup and view all the answers

    Which statement correctly describes the cellular structure of sclerenchyma?

    <p>Sclerenchyma cells are closely packed with nearly absent lumen.</p> Signup and view all the answers

    Which plant functions are primarily served by sclerenchyma?

    <p>Mechanical support and protection.</p> Signup and view all the answers

    How do the functions of xylem and phloem primarily differ?

    <p>Xylem conducts water; phloem conducts sugars.</p> Signup and view all the answers

    What is the most important type of cell in the xylem?

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

    Which type of cell is NOT alive in the xylem?

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

    What is the primary function of phloem in plants?

    <p>Transport photosynthesized food</p> Signup and view all the answers

    What is a key characteristic of the epidermis?

    <p>It is covered with a cuticle.</p> Signup and view all the answers

    Which cells lack a mechanical function in the phloem?

    <p>Companion cells</p> Signup and view all the answers

    Which type of plant features a thicker cuticle?

    <p>Xerophytic plants</p> Signup and view all the answers

    What property do all xylem elements share?

    <p>They have lignified walls.</p> Signup and view all the answers

    Which cells in phloem are responsible for supporting sieve tubes?

    <p>Companion cells</p> Signup and view all the answers

    Study Notes

    Plant Tissue

    • Plant tissues are categorized into meristematic and permanent tissues
    • Meristematic tissue is responsible for plant growth
    • Apical meristems are located at the tips of stems and roots, promoting primary growth
    • Lateral meristems are located beneath the bark (cork cambium) and in vascular bundles, promoting secondary growth
    • Intercalary meristems are found at the base of leaves or internodes, causing elongation in plant parts like stems of grasses
    • Permanent tissues are developed from meristematic tissue and are categorized as simple and complex tissues
    • Simple permanent tissues have similar cells, categorized into parenchyma, collenchyma and sclerenchyma
    • Parenchyma is the most common simple permanent tissue, making up the bulk of plant bodies as packing tissue, storage of food, and assimilation of food
    • Collenchyma is characterized by thickened cell walls at corners, providing mechanical support and flexibility (e.g., in stems and petioles)
    • Sclerenchyma has dead cells with thick lignified walls, offering strength and rigidity (e.g., in stems, nuts, and seed coats)
    • Complex permanent tissues are composed of various cells performing specialized functions. Xylem and phloem are two types
    • Xylem is a vascular tissue, responsible for transporting water and minerals upwards in the plant. Composed of four types of cells: tracheids, vessels, xylem parenchyma and xylem fibers.
    • Phloem is a vascular tissue responsible for transporting photosynthetically prepared food materials from leaves to storage organs and then to growing regions. Composed of sieve tubes, companion cells, phloem parenchyma, and phloem fibers

    Protective Tissue

    • Protective tissues include epidermis and cork
    • Epidermis is a single layer of cells covering leaves, stems, and roots. It protects from pathogens, reduces water loss, and helps regulate gas exchange
    • Cork acts as the outer protective layer in older stems and roots. Cork cells contain suberin for waterproofing.

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    Plant Tissue PDF

    Description

    This quiz explores the different types of plant tissues, focusing on meristematic and permanent tissues. It covers key concepts such as apical, lateral, and intercalary meristems, as well as the characteristics of simple (parenchyma, collenchyma, sclerenchyma) and complex permanent tissues. Test your knowledge of plant growth and tissue classification!

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