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Question
Azolla is used as biofertilizer as it has
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Solution
The correct option is A Cyanobacteria
Azolla is used as a biofertiliser because the leaves of this plant have cyanobacteria called Anabaena. This is an algae which have the enzyme nitrogenase in the heterocysts. The heterocysts are specialized cells in the algae. These cells help in fixation of nitrogen with the help of the enzyme. The rice plants grown in these paddy fields use this fixed nitrogen. Thus, the yield is increased. Thus, the correct answer is option B.
Azolla is used as a biofertiliser because the leaves of this plant have cyanobacteria called Anabaena. This is an algae which have the enzyme nitrogenase in the heterocysts. The heterocysts are specialized cells in the algae. These cells help in fixation of nitrogen with the help of the enzyme. The rice plants grown in these paddy fields use this fixed nitrogen. Thus, the yield is increased.
Thus, the correct answer is option B.
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