Biotechnology: Principle and ProcessHard

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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