Q. All of the following statements concerning the actinomycetous filamentous soil bacterium $Frankia$ are correct, except that $Frankia$
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 and simulates cell proliferation in the host’s cortex
D) Forms specialized vesicles, in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids
Explanation
$Frankia$cannot fix nitrogen in the free living state.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.