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SSC General Science & Technology Sample Paper NCERT Sample Paper-6

  • question_answer
    An aquatic fem used as bio-fertilizer is

    A)  Azalia  

    B)  Marsilea

    C)  Pteridium         

    D)  Saluonia

    Correct Answer: A

    Solution :

    [a] The nitrogen fixing cyanobacteria (BGA) form symbiotic association with several plants e.g., Cyeasroots, lichens, liverwort, Azolla. Out of these, Azolla-Anabaena association is of great importance to agriculture. It is being used as bio-fertilizer in fields.


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