| 6. | The heavily polluted zone of water reservoir is known as |
| a. | pleosaprophytic zone |
| b. | mesosaprophytic zone |
| c. | oligosaprophytic zone |
| d. | none of these |
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Answer: (a).pleosaprophytic zone
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| 7. | Streptomyces griseochromogenes is reported to show a potent curative effect against |
| a. | rice blast disease |
| b. | yellow blight of maize |
| c. | milo of soybean |
| d. | eye spot of sugarcane |
| View Answer Report Discuss 50-50! |
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Answer: (a).rice blast disease
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| 8. | Which of the following is selectively effective against dicot weeds? |
| a. | Cycloheximide |
| b. | Anisomycin |
| c. | Herbicidin A and B |
| d. | Bialaphos |
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Answer: (c).Herbicidin A and B
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| 9. | Which of the following/(s) can be used for the reduction of nitrate in waste water? |
| a. | Growth of Hypomicrobium in presence of added methanol |
| b. | Micrococcus denitrificans cells encapsulated in liquid membranes |
| c. | Both (a) and (b) |
| d. | Nitrosomonas europaen |
| View Answer Report Discuss 50-50! |
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Answer: (c).Both (a) and (b)
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| 10. | Which of the following herbicide is known to be effective against perennial shrubs, annual weeds and weeds of rice? |
| a. | Cycloheximide |
| b. | Anisomycin |
| c. | Herbicidin |
| d. | Bialaphos |
| View Answer Report Discuss 50-50! |
|
Answer: (a).Cycloheximide
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