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Most active nitrogen-fixing blue green alga of rice fields is

$\begin{array}{1 1}(A)\;\text{Anabaena azollae}\\(B)\;\text{Aulosira fertilissima}\\(C)\;\text{Cylindrospermum licheniforme}\\(D)\;\text{Nostoc cycadacearum}\end{array} $

1 Answer

Most active nitrogen-fixing blue green alga of rice fields is aulosira fertilissima
Hence (B) is the correct answer.
answered Jul 15, 2014 by sreemathi.v
 
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