Nitrogen Cycle As Resource


 
 
Concept Explanation
 

Nitrogen Cycle As Resource

Nitrogen Cycle

Nitrogen comprises 78 to 79 per cent of the earth’s atmosphere. It is an important constituent of plant and animal protein, which forms the structural and functional component of cells. Nitrogen is also present in DNA, RNA, vitamins, urea and alkaloids. Before studying the nitrogen cycle, you should understand the following processes.

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Sample Questions
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Question : 1

In which from plants take up nitrogen?

Right Option : A
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Question : 2

Nitrogen is present in ________________________.

Right Option : D
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Question : 3

Which of the following are correct :

(a) Nitrogen comprises 78 to 79 per cent of the earth’s atmosphere.

(b) Nitrogen is present in DNA, RNA, vitamins, urea and alkaloids.

(c) Atmospheric nitrogen is used only by a few simple organisms.

Right Option : D
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