Home Biology Mineral Nutrition ( Not In Syllabus ) General Read the following statements (i to v) and a…
Biology Mineral Nutrition ( Not In Syllabus ) General Single Correct MCQ
Published on: August 13, 2026

Read the following statements (i to v) and answer the following question.

(i) Nitrogen is very essential for the sustenance of life.

(ii) N 2 – fixation requires a strong reducing agent.

(iii) N 2 – fixation is accomplished with the help of nitrogen fixing microbes, mainly Frankia.

(iv) The enzyme nitrogenase which plays an important role in biological N 2 fixation is very sensitive to carbon dioxide.

(v) The energy, ATP, required is provided by the respiration of the host cells.

How many of the above statement are incorrect?

A
iii and iv
B
iii and v
C
i, ii and iii
D
ii, iv and v

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