Q195 / 200 · NEET 2011 (Screening) · Zoology

An organism used as a biofertilizer for raising soyabean crop is

A
Azospirillum
Correct answer
B
Rhizobium
C
Nostoc
D
Azotobacter

Solution

Rhizobium leguminosarum is a symbiotic bacteria found in root nodules of legume. This bacterium has nitrogen fix nif gene and fixing $\mathrm{N}_2$. Soyabean is a legume. Thus, Rhizobium is used as a biofertilizer for raising soyabean crop.

Hence, the correct answer is option: 'B'.

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