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EAMCET Medical EAMCET Medical Solved Paper-2005

  • question_answer
    Nostoc fixes dinitrogen in symbiotic association with the following :
    1. Ainus
    2. Gunnera
    3. Anthoceros 
    4. Casuarina
    The correct combination is:

    A)  1 and 2                                

    B)  2 and 3

    C)  1 and 3                                

    D)  1 and 4

    Correct Answer: B

    Solution :

                     Nostoc is a blue-green alga or cyan bacterium. It is a filamentous and in most causes colonial blue-green alga. It occurs in Free State as well as in symbiotic association with Anthoceros (abryophyte) or with Gunnera manicata (an angiospermic marsh plant).


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