Home PYQs UPPSC UPPSC MCQs Prelims 2006 (GS Paper I)

Question

The bacteria responsible for fixing nitrogen in Soyabean is:

  1. Rhizobium Leguminoserum
  2. Rhizobium japonicum
  3. Rhizobium phaseoli
  4. Rhizobium trifolii

Answer:

Option B: Rhizobium japonicum

Detailed Solution:

The correct answer is “Rhizobium japonicum”.

Rhizobium japonicum (now often referred to as Bradyrhizobium japonicum) forms symbiotic relationships with soybean plants, facilitating the process of nitrogen fixation.