The groups of bacteria which have the ability to fix nitrogen from air to soil are Options: A . &nbspnone of these B . &nbspboth (a) and (b) C . &nbspsymbiotic D . &nbspnonsymbiotic

The groups of bacteria which have the ability to fix nitrogen from air to soil a

Question

The groups of bacteria which have the ability to fix nitrogen from air to soil are

Options:

A . none of these

B . both (a) and (b)

C . symbiotic

D . nonsymbiotic

Answer: Option B

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Question 1. __________ play a key role in the transformation of rock to soil.....

Question 2. The conversion of molecular nitrogen into ammonia is known as....

Question 3. Some microorganisms have the ability to increase the nitrogen content of soils, are called as....

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Question 5. Nitrogen fixation....

Question 6. The breakdown of cattle manure in biogas is accomplished by which of the following type of bacteria?....

Question 7. For rapid decomposition by microbes, the substrate should have a C/N ratio of....

Question 8. Degree of compost maturity can be assesed by....

Question 9. Which are the main source of biofertilisers?....

Question 10. Denitrification is....

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