{"id":35662,"date":"2024-06-28T14:44:08","date_gmt":"2024-06-28T09:14:08","guid":{"rendered":"https:\/\/wbbsesolutions.net\/?p=35662"},"modified":"2024-07-04T14:46:42","modified_gmt":"2024-07-04T09:16:42","slug":"wbbse-class-9-life-science-chapter-4-microbes-in-human-welfare-mcqs","status":"publish","type":"post","link":"https:\/\/wbbsesolutions.net\/wbbse-class-9-life-science-chapter-4-microbes-in-human-welfare-mcqs\/","title":{"rendered":"WBBSE Class 9 Life Science Chapter 4 Microbes In Human Welfare Multiple Choice Questions"},"content":{"rendered":"
Question 1. Microbes are\u2014<\/p>\n
Answer: 4. All of these<\/p>\n
Question 2. The term \u2018microbe\u2019 was coined by\u2014<\/p>\n
Answer: 2. Sedillot<\/p>\n
Question 3. Azolla maintains a symbiotic association with<\/p>\n
Answer: 4. Anabaena<\/p>\n
Read and Learn More WBBSE Class 9 Life Science MCQs<\/a><\/strong><\/p>\n Question 4. Which is not a bio-fertilizer?<\/p>\n Answer: 3. Agaricus<\/p>\n Question 5. Some cyanobacteria are used as bio-fertilizer because\u2014<\/p>\n Answer: 3. They can trap atmospheric nitrogen<\/p>\n WBBSE Class 9 Life Science Question And Answer<\/strong><\/p>\n Question 6. Bf for Bt-cotton stands for\u2014<\/p>\n Answer: 3. Bacillus thuringiensis<\/p>\n Question 7. Mycorrhiza is an\u2014<\/p>\n Answer: 2. Association of fungi and flowering plants<\/p>\n Question 8. Cyanobacteria are\u2014<\/p>\n Answer: 2. Photosynthetic prokaryotic microorganisms<\/p>\n Question 9. A soil-dwelling nitrogen-fixing bacterium is\u2014<\/p>\n Answer: 3. Clostridium<\/p>\n Question 10. Which of the following microorganisms can kill insect pests?<\/p>\n Answer: 4. All of these<\/p>\n WBBSE Class 9 Life Science Question And Answer<\/strong><\/p>\n Question 11. The virus used in the bio-control of insect pests is\u2014<\/p>\n Answer: 3. Nuclear Polyhedrosis Virus<\/p>\n Question 12. An anaerobic nitrogen-fixing non-symbiotic bacterium\u2014<\/p>\n Answer: 2. Clostridium<\/p>\n Question 13. VAM is a\/an\u2014<\/p>\n Answer: 3. Endomycorrhiza<\/p>\n Question 14. Granulosis virus and NPV are similar as both act as\u2014<\/p>\n Answer: 2. Bio-control agents<\/p>\n Question 15. Bacteria used for controlling Japanese beetle\u2014<\/p>\n Answer: 2. Bacillus popular<\/p>\n Question 16. Spodopterin, a bio-control agent for insect pests is composed of\u2014<\/p>\n Answer: 4. Fungus<\/p>\n Question 17. An example of cyanobacteria is\u2014<\/p>\n Answer: 4. All of these<\/p>\n WBBSE Class 9 Life Science Question And Answer<\/strong><\/p>\n Question 18. Mycorrhizae fungi association with\u2014<\/p>\n Answer: 1. The root system of pine<\/p>\n Question 19. Application of Azolla in paddy fields is popularly practiced in\u2014<\/p>\n Answer: 3. Southeast Asian countries<\/p>\n Question 20. Mycorrhiza is used as a bio-fertilizer because it\u2014<\/p>\n Answer: 4. All of these<\/p>\n Question 21. An antibiotic-producing fungus is\u2014<\/p>\n Answer: 3. Penicillium<\/p>\n WB Class 9 Life Science Question Answer<\/strong><\/p>\n Question 22. Nitrifying bacteria are\u2014<\/p>\n Answer: 2. Chemosynthetic bacteria<\/p>\n Question 23. Bacteria that are capable of trapping atmospheric nitrogen are\u2014<\/p>\n Answer: 2. Nitrogen-fixing bacteria<\/p>\n Question 24. The bacterium, mostly used in the experiments of biotechnology is\u2014<\/p>\n Answer: 4. E.coli<\/p>\n Question 25. Rhizobium is a\u2014<\/p>\n Answer: 2. Symbiotic, nitrogen-fixing bacteria<\/p>\n WBBSE Class 9 Life Science Question And Answer<\/strong><\/p>\n Question 26. Application of Azolla in paddy field increases .in soil.<\/p>\n Answer: 2. Nitrogen<\/p>\n Question 27. Nostoc is a\u2014<\/p>\n Answer: 2. Nitrogen-fixing cyanobacteria<\/p>\n Question 28. Which of the following organisms is not used as a bio-fertilizer?<\/p>\n Answer: 2. Lichen<\/p>\n Question 29. Insoluble phosphate of soil is transformed into soluble phosphate by\u2014<\/p>\n Answer: 4. Pseudomonas putida<\/p>\n Question 30. Sweet pea plants can grow in infertile land because of\u2014<\/p>\n Answer: 3. Rhizobium<\/p>\n Question 31. The microbe which does not have any role as a bio-fertilizer is\u2014<\/p>\n Answer: 4. Protozoa<\/p>\n Question 32. Cyanobacterial colony is formed in\u2014<\/p>\n Answer: 2. Cycas<\/p>\n WBBSE Class Nine Life Science<\/strong><\/p>\n Question 33. A fungal bio-control agent is\u2014<\/p>\n Answer: 2. Beauveria bassiana<\/p>\n","protected":false},"excerpt":{"rendered":" WBBSE Class 9 Life Science Chapter 4 Biology And Human Welfare Microbes In Human Welfare Multiple Choice Questions Question 1. Microbes are\u2014 Virus Bacteria Protozoa All of these Answer: 4. All of these Question 2. The term \u2018microbe\u2019 was coined by\u2014 Robert Hook Sedillot Robert Brown Leeuwenhoek Answer: 2. Sedillot Question 3. Azolla maintains a … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9],"tags":[],"yoast_head":"\n\n
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