What Is Organic Nitrogen Cycle?

6 Questions | Attempts: 3131

Nitrogen Cycle Quizzes & Trivia

Occupying the largest proportion in the atmosphere, Nitrogen is exchanged by living organisms as it forms the largest part of air taken in. Organic Nitrogen Cycle circulates among living organisms, humus and intermediate products. Enjoy the quiz.

Questions and Answers
  • 1. 
    The movement of nitrogen between the environment and living things is called the
    • A. 

      Nitrogen cycle

  • 2. 
    The process in which bacteria in the soil change nitrogen gas into forms that plants can use is called
    • A. 

      Nitrogen fixation

  • 3. 
    Why do organisms need nitrogen?
    • A. 

      To build up proteins, DNA, and new cells

  • 4. 
    Name 2 things that perform most nitrogen fixation.
    • A. 

      Plant roots, bacteria in the soil

  • 5. 
    How do plants get the Nitrogen the need?
    • A. 

      Plant roots take up nitrogen from the soil

  • 6. 
    How do animals get the nitrogen the need?
    • A. 

      From eating plants

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