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  3. NEET

NEET AIPMT SOLVED PAPER 1998

  • question_answer
                Farmers have reported over 50% higher yields of rice by using which of the following biofertilizer?

    A)                                                                                                                                                                                              Mycorrhiza

    B)              Azolla pinnata

    C)              Cyanobacteria     

    D)              Legume-Rhizobium symbiosis

    Correct Answer: B

    Solution :

                Anabaena azollae, a cyanobacterium living in the cavities of fem Azolla fixes atmospheric nitrogen and releases it into the leaf cavity of the fern. Farmers have reported over 50% higher yields by using Azolla.


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