![A water fern which is used as a green manure in rice fields is](https://www.gkseries.com/blog/wp-content/uploads/2022/01/A-water-fern-which-is-used-as-a-green-manure-in-rice-fields-is.png)
Q. A water fern which is used as a green manure in rice fields is
A. Azolla
B. Mucor
C. Salvinia
D. Aspergillus
Answer: Azolla
A. Azolla
B. Mucor
C. Salvinia
D. Aspergillus
Answer: Azolla
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