Xylem Tissue MCQs

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1. What complex tissue constitutes the vascular bundles along with phloem?
  • (A) Epidermis
  • (B) Cortex
  • (C) Xylem
  • (D) Pith
    • Answer

    Answer: (C) Xylem

     2. In dicotyledonous stems, what is present between the phloem and xylem?
  • (A) Pericycle
  • (B) Endodermis
  • (C) Cambium
  • (D) Mesophyll
    • Answer

    Answer: (C) Cambium

     3. Because of the presence of cambium, what ability do open vascular bundles possess?
  • (A) To form primary xylem
  • (B) To form secondary xylem and phloem tissues
  • (C) To store starch
  • (D) To perform photosynthesis
    • Answer

    Answer: (B) To form secondary xylem and phloem tissues

     4. In monocotyledons, why are the vascular bundles containing xylem referred to as closed?
  • (A) They have no cambium to form secondary tissues
  • (B) They are surrounded by endodermis
  • (C) They lack xylem
  • (D) They lack phloem
    • Answer

    Answer: (A) They have no cambium to form secondary tissues

     5. What is the arrangement called when xylem and phloem within a vascular bundle are arranged in an alternate manner along different radii?
  • (A) Conjoint
  • (B) Radial
  • (C) Closed
  • (D) Open
    • Answer

    Answer: (B) Radial

     6. In which part of the plant is the radial arrangement of xylem and phloem typically found?
  • (A) Leaves
  • (B) Stems
  • (C) Roots
  • (D) Flowers
    • Answer

    Answer: (C) Roots

     7. What arrangement features xylem and phloem jointly situated along the same radius of the vascular bundles?
  • (A) Conjoint
  • (B) Radial
  • (C) Alternate
  • (D) Scattered
    • Answer

    Answer: (A) Conjoint

     8. Conjoint vascular bundles are commonly found in which plant parts?
  • (A) Roots only
  • (B) Stems and leaves
  • (C) Roots and leaves
  • (D) Epidermis
    • Answer

    Answer: (B) Stems and leaves

     9. In conjoint vascular bundles, where is the phloem usually located relative to the xylem?
  • (A) On the inner side
  • (B) On the outer side
  • (C) In the center
  • (D) Scattered randomly
    • Answer

    Answer: (B) On the outer side

     10. How many xylem and phloem patches are usually present in a dicotyledonous root?
  • (A) One to two
  • (B) Two to four
  • (C) Five to six
  • (D) More than six
    • Answer

    Answer: (B) Two to four

     11. What are the parenchymatous cells lying between the xylem and the phloem in dicot roots called?
  • (A) Medullary rays
  • (B) Conjuctive tissue
  • (C) Casparian strips
  • (D) Bundle sheath
    • Answer

    Answer: (B) Conjuctive tissue

     12. In dicot roots, what develops between the xylem and phloem patches at a later stage?
  • (A) Cortex
  • (B) A cambium ring
  • (C) Endodermis
  • (D) Hypodermis
    • Answer

    Answer: (B) A cambium ring

     13. As compared to the dicot root, how many xylem bundles are usually found in a monocot root?
  • (A) Fewer than two
  • (B) Exactly four
  • (C) More than six
  • (D) No xylem bundles
    • Answer

    Answer: (C) More than six

     14. Which term describes the xylem arrangement of having more than six bundles in monocot roots?
  • (A) Diarch
  • (B) Tetrarch
  • (C) Endarch
  • (D) Polyarch
    • Answer

    Answer: (D) Polyarch

     15. In a typical young dicotyledonous stem, what type of protoxylem is present in each vascular bundle?
  • (A) Exarch
  • (B) Endarch
  • (C) Mesarch
  • (D) Polyarch
    • Answer

    Answer: (B) Endarch

     16. Which of the following describes the vascular bundles of a dicot stem?
  • (A) Conjoint, closed, endarch protoxylem
  • (B) Radial, open, exarch protoxylem
  • (C) Conjoint, open, endarch protoxylem
  • (D) Radial, closed, endarch protoxylem
    • Answer

    Answer: (C) Conjoint, open, endarch protoxylem

     17. The vascular tissue system is formed by which of the following tissues?
  • (A) Cortex and pericycle
  • (B) Xylem and phloem
  • (C) Epidermis and stomata
  • (D) Pith and hypodermis
    • Answer

    Answer: (B) Xylem and phloem

     18. What is a primary function of the conducting tissue formed by the vascular bundles?
  • (A) To protect the plant
  • (B) To perform photosynthesis
  • (C) To translocate water, minerals and food material
  • (D) To prevent water loss
    • Answer

    Answer: (C) To translocate water, minerals and food material

     19. In a dicot leaf, the vascular bundles containing xylem can be seen in the veins and what other structure?
  • (A) Epidermis
  • (B) Midrib
  • (C) Palisade parenchyma
  • (D) Spongy parenchyma
    • Answer

    Answer: (B) Midrib

     20. What characteristic distinguishes the vascular bundles containing xylem in monocot stems?
  • (A) Conjoint and closed
  • (B) Radial and open
  • (C) Conjoint and open
  • (D) Radial and closed
    • Answer

    Answer: (A) Conjoint and closed

     21. In a monocot stem, the vascular bundles containing xylem are generally located where?
  • (A) Scattered throughout the ground tissue
  • (B) Arranged in a single ring
  • (C) Only in the center
  • (D) Only in the epidermis
    • Answer

    Answer: (A) Scattered throughout the ground tissue

     22. Along with phloem, xylem makes up the vascular bundles which are explicitly excluded from which tissue system?
  • (A) Vascular tissue system
  • (B) Ground tissue system
  • (C) Conducting system
  • (D) Stele
    • Answer

    Answer: (B) Ground tissue system

     23. All tissues on the innerside of the endodermis, which include the vascular bundles containing xylem, constitute the what?,
  • (A) Cortex
  • (B) Stele
  • (C) Epidermis
  • (D) Mesophyll
    • Answer

    Answer: (B) Stele

     24. Which type of plant roots have well-developed xylem but do not undergo any secondary growth?
  • (A) Dicotyledonous roots
  • (B) Gymnosperm roots
  • (C) Monocotyledonous roots
  • (D) Tap roots
    • Answer

    Answer: (C) Monocotyledonous roots

     25. In monocot leaves, what reflects the near similar sizes of vascular bundles containing xylem?
  • (A) Reticulate venation
  • (B) Parallel venation
  • (C) Dorsiventral structure
  • (D) Cuticle thickness
    • Answer

    Answer: (B) Parallel venation

     26. In a dicotyledonous leaf, the size of the vascular bundles containing xylem depends on the size of the what?
  • (A) Mesophyll cells
  • (B) Stomata
  • (C) Veins
  • (D) Palisade parenchyma
    • Answer

    Answer: (C) Veins

     27. What structure surrounds the vascular bundles, including the xylem, in dicot leaves?
  • (A) Endodermis
  • (B) Pericycle
  • (C) Layer of thick walled bundle sheath cells
  • (D) Cambium
    • Answer

    Answer: (C) Layer of thick walled bundle sheath cells

     28. In a monocot stem, water-containing cavities are present within what structure?
  • (A) Pith
  • (B) Vascular bundles
  • (C) Cortex
  • (D) Endodermis
    • Answer

    Answer: (B) Vascular bundles

     29. In a dicotyledonous stem, what constitutes the medullary rays placed between the vascular bundles containing xylem?
  • (A) Sclerenchyma patches
  • (B) Collenchymatous cells
  • (C) Radially placed parenchymatous cells
  • (D) Starch sheath
    • Answer

    Answer: (C) Radially placed parenchymatous cells

     30. Which group of plants lacks cambium in its vascular bundles, meaning it does not form secondary xylem?,
  • (A) Dicot stem
  • (B) Monocotyledons
  • (C) Gymnosperms
  • (D) Dicot root
    • Answer

    Answer: (B) Monocotyledons
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