AIPMT PRELIMS 2005 Botany Actinomycetes MCQ Question
All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia :
can induce root nodules on many plant species
can fix nitrogen in the free-living state
like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host's cortex
forms specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids
Correct Answer
Detailed Explanation
Frankia does not infect its host plant through root hair deformation like Rhizobium. It forms nodules directly.
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