All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia

Options

(a) can induce root nodules on many plant species
(b) can fix nitrogen in the free living state
(c) like Rhizobium, it usually infects its host plant through root hair deformation ans stimulates cell proliferation in the host’s cortex
(d) forms specialised vesicles, in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids

Correct Answer:

can fix nitrogen in the free living state

Explanation:

Nitrogen fixation is the process whereby atmospheric nitrogen is converted to ammonia with the aid of an enzyme called nitrogenase, and the reaction can be described by the following equation: Frankia will fix nitrogen in both the free‐living and the symbiotic state