Is nitrogen fixation and nitrification same.

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Solution

Nitrification is the biological oxidation of ammonia with oxygen into nitrite followed by the oxidation of these nitrites into nitrates - carried out in soil by the action of nitrifying bacteria on decaying organic matter.

Nitrogen fixation is the conversion of atmospheric nitrogen into compounds, such as ammonia, by natural agencies or various industrial processes - eg: Rhizobium bacteria in the root nodules of legumes fix atmospheric nitrogen.

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Similar questions

Q. Which of the following processes releases nitrogen back into the atmosphere?
I. Nitrification
II. Denitrification
Ill. Nitrogen fixation

Q. Explain how Nitrification is different from Nitrogen fixation. Mention the role of Thiobacllus in nitrogen cycle? What do you understand by biological Nitrogen fixation?

Find the mismatched pair among the following:
i. Nitrification - Nitrosomonas
ii. Ammonification - Nitrobacter
iii. Denitrification - Azotobacter
iv. Nitrogen Fixation - Nostoc

Q. Match the columns and choose the correct answer.

	I		II
(p)	Thiobacillus	(i)	Nitrogen fixation
(q)	Nitrosomonas	(ii)	Ammonification
(r)	Azotobacter	(iii)	Nitrification
(s)	Pseudomonas	(iv)	Denitrification

Q. Match the columns and choose the correct answer.

	I		II
p	Thiobacillus denitrificans	i	Nitrogen fixation
q	Nitrosomonas	ii	Ammonification
r	Azotobacter	iii	Nitrification
s	Bacillus vulgaris	iv	Denitrification

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