1.

3.-The bacteriasupply natural manure to paddy fields.a. azollab. anabaenac. azatobaterd. nostoc

Answer»

a. Azolla

The bacteriaazollasupplies natural manure to the paddy fields.

Azollais a glidingpteridophyte, which contains asendosymbiontthenitrogen-settlingcyanobacterium Anabaena azollae(Nostocaceaefamily).

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