Question

28. Lightning and soil bacteria are both involved in the production of
a. nitrates.
b. potassium.
c. phosphates.
d. none of the above

Answer 1

Answer:

it is nitrogen fixation

Explanation:

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Answer 2

Answer:

Option a. Nitrates are produced by soil bacteria and lightning.

Explanation:

Lightning: During lightning, nitrogen atoms bond with oxygen present in the atmosphere, forming nitrogen dioxide.

Cloud droplets and raindrops are present along with the lightning.

Nitrogen dioxide dissolves in water, forming nitric acid which in turn forms nitrates.  

Soil Bacteria: The dead organisms, faeces and urine are broken down by the decomposers to form nitrogen.

They are returned to the soil as ammonia.

Ammonia is converted to nitrates by the nitrifying bacteria present in the soil.

Bacteria like Nitrobacter agilis, Nitrobacter alkalicus, and Nitrobacter winogradskyi are capable of converting nitrites to nitrates.  

Hence, both lightning and soil bacteria are involved in the production of nitrates.