Due to which of the following organisms, yield of
rice has been increased ?
(a) Anabaena (b) Bacillus popilliae
(c) Sesbania (d) Bacillus polymyxa
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Answer:
a)Anabaena
Explanation:
Azolla is an aquatic fern. It increases the amount of nitrogen fertilizer available to growing rice. It is in symbiotic association with Anabaena. Hence, it is used as biofertilizer in the yield of rice by increasingthe amount of nitrogenous compound in the soil.
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a - Anabaena is the ur answer
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