Question

Which of the following soil microorganisms is responsible for fixing atmospheric nitrogen into a usable form for plants?

A Bacteria Correct Answer Incorrect Answer
B Fungi Correct Answer Incorrect Answer
C Algae Correct Answer Incorrect Answer
D Protozoa Correct Answer Incorrect Answer

Solution

Certain bacteria, known as nitrogen-fixing bacteria, have the unique ability to convert atmospheric nitrogen gas into a form (ammonia or nitrate) that plants can utilize as a nutrient. This process is called nitrogen fixation and is essential for enriching soil fertility.

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