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For students in search of
- Hydroponic Gardening
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Guides - Basics to Experts level
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Growing fruit and vegetables hydroponically
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Practical daily questions or queries of hydroponics lovers
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Current Hydroponics and Indoor Gardening Market Growth as well as Trends
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| 11. |
Aphelinus mali has been a successful parasite in controlling: |
| A. |
Tobacco caterpiller |
B. |
Apple wolly aphis |
| C. |
Maize stem borer |
D. |
Sugarcane top borer |
Answer: Option B
Explanation:
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| 12. |
Archnids and insects contain malpighian tubules as organs of: |
| A. |
Respiration |
B. |
Excretion |
| C. |
Digestion |
D. |
Secretion |
Answer: Option B
Explanation:
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| 13. |
Alxillary sclerites are absent in: |
| A. |
Lepidoptera |
B. |
Coleoptera |
| C. |
Odonata |
D. |
Distyoptera |
Answer: Option C
Explanation:
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| 14. |
Bacillus thurigiensis was reported by Berliner from: |
| A. |
Tribolium |
B. |
Heliothis |
| C. |
Ephestia |
D. |
Spodoptera |
Answer: Option C
Explanation:
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| 15. |
Bacillus thuringiensis is most effective at pH: |
| A. |
3 to 6 |
B. |
9 to 10 |
| C. |
11 to 14 |
D. |
All of the above |
Answer: Option B
Explanation:
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| 16. |
Wingless hexapod with 6 abdominal segments: |
| A. |
Diplura |
B. |
hysanura |
| C. |
Collembolad |
D. |
Protura |
Answer: Option C
Explanation:
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| 17. |
Basic unit of classification is known: |
Answer: Option A
Explanation:
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| 18. |
Berlese's theory was proposed to explain the orign of: |
| A. |
Egg stage |
B. |
Larval stage |
| C. |
Pupal stage |
D. |
Abdult stage |
Answer: Option C
Explanation:
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| 19. |
Bio-types of brown plant hopper are of: |
| A. |
2 types |
B. |
3 types |
| C. |
4 types |
D. |
5 types |
Answer: Option D
Explanation:
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| 20. |
Black scale insect of citrus is controlled by: |
| A. |
Metaphycus loundsbury |
B. |
Rodolia cardinalis |
| C. |
Both of them |
D. |
None of them |
Answer: Option A
Explanation:
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