The nitrogen present in the air can be converted into nitrates by

A biological process of nitrogen fixation

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Photosynthesis

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Solution

The correct option is A A biological process of nitrogen fixation
The conversion of atmospheric nitrogen into inorganic or organic usable forms through the agency of living organisms is called biological nitrogen fixation.
The process is carried by two main types of micro-organisms: free-living or symbiotic and those which live in close symbiotic association with plants. Hence option

A is the correct answer.

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Similar questions

Q. Question 9
The nitrogen molecules present in air can be converted into nitrates and nitrites by

(a) a biological process of nitrogen fixing bacteria present in soil
(b) a biological process of carbon fixing factor present in soil
(c) any of the industries manufacturing nitrogenous compounds
(d) the plants used as cereal crops in field

Q. Which of the following can convert the nitrogen molecules present in air into nitrates and nitrites?
(a) a biological process of nitrogen-fixing bacteria present in the soil
(b) a biological process of carbon fixing factor present in the soil
(c) any of the industries manufacturing nitrogenous compounds

Q. The nitrogen molecules present in the air can be converted into nitrates and nitrites by :

Q. Biological Nitrogen fixers

a) Able to fix nitrogen into salts of nitrogen
b) Able to fix nitrogen into usable forms
c) Able to convert nitrogen into nitrates
d) Able to convert nitrogen into nitrates only

Nitrogen fixation is a process in which nitrogen ( $N_{2}$ ) in the atmosphere is converted into ammonium ${N H_{4}}^{+}$ or nitrogen dioxide ( $N O_{2}$ ). Which of the following is/are responsible for this?

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