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A fern commonly found in rice field is

$\begin{array}{1 1}(A)\;\text{Anabaena}\\(B)\;\text{Azolla}\\(C)\;\text{Spirulina}\\(D)\;\text{Dryopteris}\end{array} $

1 Answer

A fern commonly found in rice field is azolla
Hence (B) is the correct answer.
answered Jul 16, 2014 by sreemathi.v
 
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