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Uttarakhand PMT Uttarakhand PMT Solved Paper-2007

  • question_answer
    In Dryopteris, the opening mechanism of sporangium is effectively operated by

    A)  stalk          

    B)  annulus

    C)  stomium       

    D)  peristome

    Correct Answer: B

    Solution :

    Annulus is the line of specialized cells involved in opening moss capsules and fern sporangia to liberate the spores.


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