MCQ Questions Class 11 Biology Mineral Nutrition with Answers

1. The ion which activates many enzymes involved in photosynthesis, respiration, nitrogen metabolism is

2. An immobile element in plants is

3. Which one of the following is a wrong statement?

4. Influx and efflux of H⁺ ions inside the cell change the

5. Which of the following is not an essential element?

6. Function of laghaemoglobin during biological nitrogen fixation in root nodules of legumes is to

7. In plant, nitrate is reduced to ammonia state in two steps. In second step electrons are donated by

8. Which is essential for root hair growth?

9. Denitrification is carried out by

10. Which one of the following microbes forms a symbiotic association with plants and helps them in their nutrition.