Which of the following is the cyanobacterial group acting as biofertiliser?

Bacillus

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Anabaena

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Rhizobium

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Azotobacter

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Solution

The correct option is B Anabaena
Biofertilizers are the suspension of microorganism which remains in close association with the roots and converts the atmospheric nitrogen into the soluble form. Anabaena is a genus of filamentous cyanobacteria, that exists as plankton. It is known for its nitrogen fixing abilities and they form symbiotic relationships with certain plants, such as the mosquito fern. Certain species of Anabaena have been used on rice paddy fields, proving to be an effective natural fertilizer.
So, the correct answer is option B.

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