Question

----------- is used as a biofertilizer in paddy fields.
A) azolla B) Nostoc C) azotobacter D) anabaena

Answer 1

Answer:

Anabaena is the correct answer

Answer 2

Answer:

hey dear here is your answer......

axolla is used as a biofertilizer in paddy fields.

So the correct option is {A}✔️

Hope it helps you dear

thanks dear a lot...