Microbes In Human Welfare Question 39
Question: Which of the following is the pair ofbiofertilisers?
Options:
A) Azolla and blue green algae
B) Nostoc and legume
C) Rhizobium and grasses
D) Salmonella & E. coli
Show Answer
Answer:
Correct Answer: A
Solution:
The term biofertilizers refer to the substance containing living or dried powder of microorganisms, it may be used to include all organic resources (manure) for plant growth which are rendered in an available form for plant absorption through microorganisms or plant associations or interactions.
Biofertilizers are three types, nitrogen fixing bacteria, nitrogen-fixing cyanobacteria and mycorrhiza e.g., Rhizobium, Azotobacter, Azolla, Nostoc, Azospirilium and blue-green algae have been in use a long time. Thus, the correct answer is option A.
BETA
