Question

Which one of the following is free living bacterial biofertilizer?
a) Azotobacter
b) Rhizobium
c) Nostoc
d) Bacillus thuringiensis

Answer 1

the answe is a Azotobacter

Answer 2

Hey Dear,

● Answer -
Free living bacterial biofertilizer is *Azotobacter*.
Sometimes, Nostoc being BGA is also considered to be a free-living biofertilizer.

◆ Extra information -
- Biofertilizers are the substance that contains microorganism's living or latent cells used for increasing crop yield.
- It can be of two types -
1) Free-living biofertilizers - Azotobacter, Cyanobacteria, etc.
2) Mutalistic biofertilizers -
Azosporilium, Rhizobium, etc.

Thanks dear..