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Eduncle posted an MCQ
October 23, 2019 • 23:55 pm 0 points
  • CSIR NET
  • Life Sciences

Following are some generalizations related to wood anatomy of higher plants

Following are some generalizations related to wood anatomy of higher plants : A. The axial system of conifer woods consist mainly or entirely of tracheids. B. The rays of conifers typically contain only parenchyma cells. C. The rays of angiosperms typically contain both sclerenchyma cells and tracheids. D. Angiosperm wood may be either diffuse-porous or ring-porous. Which one of the following options represents all correct statements:

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    Eduncle Best Answer

    In conifers, which include pines, spruces, and firs, this system is composed mainly of tracheids, with some parenchyma cells. In angiosperms, which include oaks, ashes, and elms, the axial system contains, in addition to tracheids and parenchyma, vessel members and fibers 
    (1)           Vascular tissue of angiosperm is organized into discrete strands called vascular bundles, each containing xylem and phloem. Storage parenchyma and fibres are                        generally present, and sclereids rarely present 
    (2)           Angiosperms wood may be either diffuse porous or ring porous (3). A and D options are the only correct statement when compared to other options given in the                     questions. 
    So it is concluded that the correct answer is 2.

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