Strategies For Enhancement In Food Production Question 478
Question: Azotobacter and Bacillus polymyxa are [CBSE PMT 1996]
Options:
A) Decomposers
B) Nonsymbiotic nitrogen fixers
C) Symbiotic nitrogen fixers
D) Pathogenic bacteria
Show Answer
Answer:
Correct Answer: B
Solution:
Azotobacter and Bacillus polymyxa are free living or non-symbiotic nitrogen fixing bacteria of soil, which increase fertility of soil and hence yield of crop plants.
BETA
