A) Erwinia amylovora
B) Rhizobium leguminosarum
C) Xanthomonas campestris
D) Agrobacterium tumefaciens
Correct Answer: B
Solution :
Rhizobium leguminosarum is a small, flagellate gram-negative, aerobic, rod- shaped bacteria. It persists saprophytically in the soil until it infects a root hair or damaged epidermal cell. After infection, Rhizobium establishes a symbiotic relationship with legumes living inside the root nodules and fixes large amount of nitrogen, much of which his made available to the plant.You need to login to perform this action.
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