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Class 12 Biology Practice Test: Microbes in Human Welfare - Microbes as Biofertilizers
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Avg score: 63% • Most missed: “Which of the following bacteria cannot fix atmospheric nitrogen?”
Class 12 Biology Practice Test: Microbes in Human Welfare - Microbes as Biofertilizers
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15 Questions

1. Presence of which of the following elements is required for nitrogen fixation?
2. What is the full form of VAM?
3. Rhizobium is a free-living bacterium that fixes atmospheric nitrogen.
4. Which of the following is not a free-living Nitrogen-fixing bacteria?
5. Which of the following is an aerobic nitrogen-fixing bacterium?
6. Which of the following is not used as a bio-fertiliser?
7. Which of the following is not a smoother crop?
8. Which of the following is a transgenic crop?
9. Which of the following bacteria cannot fix atmospheric nitrogen?
10. Which of the following statements is not related to mycorrhiza?
11. In paddy fields, cyanobacteria serve as an important bio-fertiliser.
12. Why is there a need to switch to organic farming?
13. Which of the following is not a type of manure?
14. What are bio-insecticides?
15. With our present-day lifestyles, what is a major cause of concern?

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