Biology·MCQ Practice

Symbiotic Nitrogen Fixation — MCQ Practice

NEET UG

Version 1Updated 21 Mar 2026

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Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 6 questions available.

Q1medium

Which of the following statements about symbiotic nitrogen fixation is INCORRECT?

Q2easy

The pinkish-red colour of root nodules is due to the presence of:

Q3medium

Which of the following elements is a crucial component of the nitrogenase enzyme complex?

Q4medium

The formation of root nodules in legumes involves a specific sequence of events. Which of the following is the correct order?

Q5easy

Which of the following is an example of a symbiotic nitrogen-fixing association involving a non-leguminous plant?

Q6medium

The ammonia ( $NH_3$ ) produced during biological nitrogen fixation is immediately converted into which of the following organic forms in the plant?