Which of the following symbiotic association is not useful as bioferti – McqOptions

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1.	Which of the following symbiotic association is not useful as biofertilizer [MHCET 2002]
A.	Rhizobium and leguminous roots
B.	Algae and fungi
C.	Azolla and Anabaena
D.	Roots of higher plants and fungi
Answer» C. Azolla and Anabaena

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