MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What are bio-insecticides? |
| A. | Insects |
| B. | Living organisms that kill specific insects |
| C. | Insects that kill other big insects |
| D. | Fungi |
| Answer» C. Insects that kill other big insects | |
| 2. |
Which of the following is a transgenic crop? |
| A. | Transgenic tobacco |
| B. | Transgenic pomato |
| C. | Transgenic banana |
| D. | Transgenic apple |
| Answer» B. Transgenic pomato | |
| 3. |
Which of the following is not a smoother crop? |
| A. | Soybean |
| B. | Alfalfa |
| C. | Rye |
| D. | Wheat |
| Answer» E. | |
| 4. |
In paddy fields, cyanobacteria serve as an important bio-fertiliser. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
What is the full form of VAM? |
| A. | Vesicular-arbuscular mycorrhiza |
| B. | Venom Azolla mycorrhiza |
| C. | Venom-arbuscular mycorrhiza |
| D. | Vesicular-azollae mycorrhiza |
| Answer» B. Venom Azolla mycorrhiza | |
| 6. |
Which of the following statements is not related to mycorrhiza? |
| A. | Many members of genus <em>Glomus</em> forms mycorrhiza |
| B. | Fungal symbiont absorbs nitrogen |
| C. | Plants show resistance to root-borne pathogens |
| D. | There is an overall increase in plant growth and development |
| Answer» C. Plants show resistance to root-borne pathogens | |
| 7. |
Presence of which of the following elements is required for nitrogen fixation? |
| A. | Phosphorus |
| B. | Carbon |
| C. | Silver |
| D. | Oxygen |
| Answer» B. Carbon | |
| 8. |
Which of the following bacteria cannot fix atmospheric nitrogen? |
| A. | <em>Nostoc</em> |
| B. | <em>Anabaena</em> |
| C. | <em>Oscillatoria</em> |
| D. | <em>Lactobacillus</em> |
| Answer» E. | |
| 9. |
Which of the following is an aerobic nitrogen-fixing bacterium? |
| A. | <em>Azotobacter</em> |
| B. | <em>Clostridium</em> |
| C. | <em>Rhodospirillum</em> |
| D. | <em>Rhodopseudomonas</em> |
| Answer» B. <em>Clostridium</em> | |
| 10. |
Which of the following is not a free-living Nitrogen-fixing bacteria? |
| A. | <em>Azotobacter</em> |
| B. | <em>Clostridium</em> |
| C. | <em>Klebsiella</em> |
| D. | <em>Xanthomonas</em> |
| Answer» E. | |
| 11. |
Rhizobium is a free-living bacterium that fixes atmospheric nitrogen. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Which of the following is not used as a bio-fertiliser? |
| A. | Bacteria |
| B. | Algae |
| C. | Cyanobacteria |
| D. | Fungi |
| Answer» C. Cyanobacteria | |
| 13. |
Which of the following is not a type of manure? |
| A. | Farmyard manure |
| B. | Compost manure |
| C. | Platinum manure |
| D. | Green manure |
| Answer» D. Green manure | |
| 14. |
Why is there a need to switch to organic farming? |
| A. | Increasing poverty |
| B. | Increasing road accidents |
| C. | Increasing environmental pollution |
| D. | Increasing population |
| Answer» D. Increasing population | |
| 15. |
With our present-day lifestyles, what is a major cause of concern? |
| A. | Inflation |
| B. | Poverty |
| C. | Illiteracy |
| D. | Environmental Pollution |
| Answer» E. | |