NEET Biology NEET PYQ-Mineral Nutrition In Plants

  • question_answer
    All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia: [AIPMT (S) 2005]

    A) can induce root nodules on many plant species      

    B) can fix nitrogen in the free-living state

    C) like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host's cortex

    D) forms specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoid

    Correct Answer: A

    Solution :

    [A] Frankia is a bacterium, it grows in symbiotic association with the roots of at least eight families of higher non-leguminous plants, it can fix atmospheric nitrogen. But in the free living state it cannot do this.


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