Organisms And Populations Ques 5
5. All of the following statements concerning the Actinomycetes filamentous soil bacterium Frankia are correct except that Frankia:
[2005]
(a) Can induce root nodules on many plant species
(b) Cannot fix nitrogen in the free-living state.
(c) Forms specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids
(d) Like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host’s cortex
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Answer:
Correct Answer: 5.( b )
Solution:
- (b) Frankia, is a nitrogen fixing mycelial bacterium which is not free living and associated symbiotically with the root nodules of several non legume plants.
BETA
