Which of the following is a symbiotic nitrogen fixer?

Question

Which of the following is a symbiotic nitrogen fixer? (A) Azotobacter (B) Frankia (C) Azolla (D) Glomus

Tardigrade Admin · Accepted Answer

Frankia, is a nitrogen fixing symbiotic bacteria. It induces root nodules just like Rhizobium. It is associated symbiotically with the root nodules of several non-legume plants like Casuarina, Alnus, Rubus etc. It cannot fix nitrogen in free state.

Q. Which of the following is a symbiotic nitrogen fixer?

Azotobacter

Frankia

Azolla

Glomus

Frankia, is a nitrogen fixing symbiotic bacteria. It induces root nodules just like Rhizobium. It is associated symbiotically with the root nodules of several non-legume plants like Casuarina, Alnus, Rubus etc. It cannot fix nitrogen in free state.