A researcher is studying the transport of water in a genetically modified plant where the lignin biosynthesis pathway is disrupted. Which of the following is the MOST likely consequence observed in the xylem of this plant?
Increased tensile strength of xylem vessels and enhanced water transport
Collapsed xylem vessels and reduced water transport efficiency
No significant change in xylem structure or water transport
Increased flexibility of xylem vessels and improved water transport under stress
Related Questions
The main function of xylem vessels is:
Storage of food.
Conduction of water and minerals.
Providing mechanical support.
Translocation of sugars.
Lignification is associated with
Xylem
Phloem
Parenchyma
Chlorenchyma
Tyloses thickenings are seen in
Collenchyma
Phloem cells
Ray parenchyma only
Ray parenchyma and xylem cells
‘Exarch’ is the condition of vascular bundles in which
Protoxylem lies toward the outside and metaxylem lies inward
Metaxylem lies toward the outside and protoxylem lies inward
Metaxylem lies toward the lateral side and protoxylem lies inward
Protoxylem lies toward the lateral side and metaxylem lies inward
Presence of xylem vessels is a characteristic feature of?
Thallophytes
Pteridophytes
Glymnosperms
Angiosperms
Which of the following structures are responsible for blocking xylem vessels and contributing to the formation of heartwood?
Tyloses
Companion cells
Sieve tube elements
Phloem fibers
What is the primary function of tracheids in xylem?
Storing food materials
Conducting sugars
Conducting water and providing mechanical support
Secreting resin and gums
Which of the following statements is INCORRECT regarding xylem parenchyma?
They store food materials like starch and fats.
They assist in radial conduction of water.
They are primarily responsible for mechanical support.
They aid in lateral conduction of water.
Vessels are absent in this angiosperm.
Mangifera
Magnolia
Dillenia
Drimys
Xylem tissue is composed of
Tracheids, vessels, fibers, and parenchyma
Sieve tubes, companion cells, fibers, and parenchyma
Collenchyma, parenchyma, sclerenchyma, and epidermis
Guard cells, subsidiary cells, epidermal cells, and cuticle
