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Which of the following is a symbiotic nitrogen fixer?

  • Glomus

  • Azotobacter

  • Frankia

  • Azolla

Answer

C.

Frankia

Casuarina tree has nitrogen-fixing root nodules that harbour a filaments streptomycete like symbiotic nitrogen-fixing organism, called Frankia.

Casuarina tree has nitrogen-fixing root nodules that harbour a filaments streptomycete like symbiotic nitrogen-fixing organism, called Frankia.