Plant KingdomMedium
Question
A free living nitrogen-Fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is
Options
A.Tolypothrix
B.chlorella
C.Nostoc
D.Anabaena
Solution
Anabaena is a free living nitrogen - fixing cyanobacterium which can form symbiotic association with water fern Azolla.
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