question_answer

All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia                                                                     [CBSE PMT 2005]

A)            Can induce root nodules on many plant species

B)          Cannot fix nitrogen in the free-living state

C)            Cannot fix specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hapanoids

D)            Like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host's cortex