Question

Name two organisms belonging to two different kingdoms, that are
commonly used as biofertilizers, and how ?
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Answer 1

Answer:

N-fixing biofertilizers: These include the bacteria Rhizobium, Azotobacter, Azospirillum, Clostridium and Acetobacter among others; blue-green algae (BGA), or cyanobacteria, and the fern Azolla (which works in symbiosis with BGA).

Explanation:

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