Biotechnology: Principle and ProcessHard
Question
Which of the following is non-symbiotic biofertilizer ?
Options
A.VAM
B.Azotobacter
C.Anabaena
D.Rhizobium
Solution
Free- living (non-symbiotic) bacteria like Azotobacter and Bacillus polymyxa fix atmospheric nitrogen and make it available to crop plants. VAM (Vasicular Arbuscular Mycorrhizae) is an endosymbiosis between fungi and roots or higher plants.
Anabaena is a cyanobacterium (blue-green algae) which live solitary or in association with other plant and can fix atmospheric N2
Rhizobium bacterium makes symbiotic ass ociation with leguminous plants.
Anabaena is a cyanobacterium (blue-green algae) which live solitary or in association with other plant and can fix atmospheric N2
Rhizobium bacterium makes symbiotic ass ociation with leguminous plants.
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