A) Chlorella
B) Nostoc
C) Anabaena
D) Tolypothrix
Correct Answer: C
Solution :
Anabaena is a free living cyanobacterium which can also form symbiotic association with water form (a pteridophyte) Azolla. Nostoc (cyanobacterium) form symbiotic association with gymnosperm and are present in corroloid root of Cycas.You need to login to perform this action.
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