Uttarakhand PMT Uttarakhand PMT Solved Paper-2009

  • question_answer
    In Selaginella, trabeculae are the modification of

    A)  epidermal cells

    B)  cortical cells

    C)  endodermal cells

    D)  pericycle cells

    Correct Answer: C

    Solution :

    The stem of Selaginella kraussiana shows distelic condition. Some air spaces develop between the endodermal cells isolating two steles from the cortex. The endodermal cells elongate to form trabeculae connecting the two tissues. The stele remains suspended by  this unicelled (rarely multicelled) trabeculae.


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