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प्रश्न
How has the bacterium Bacillus thuringiensis helped us in controlling caterpillars of insect pests?
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उत्तर
Bacillus thuringiensis produces endotoxin, which disrupts the gut lining of caterpillar larvae, killing them and controlling insect pests effectively. This toxin has been used in biopesticides and genetically modified Bt crops like cotton.
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संबंधित प्रश्न
Name a genus of baculovirus.
Name and explain the type of interaction that exists in mycorrhizae and between cattle egret and cattle.
Name the type of association that the genus Glomus exhibits with higher plants.
Explain the significant role of the genus Nucleopolyhedrovirus in an ecological sensitive area.
Why are baculoviruses considered good biocontrol agents?
Name a genus of fungi that forms a mycorrhizal association with plants.
Organic farmers prefer the biological control of diseases and pests to the use of chemicals for the same purpose. Justify
Why are the spores of Bacillus thuringiensis used as bioinsecticide?
How does the activity of each one of the following help in organic farming?
Mycorrhiza
Select the odd one from given herbicides.
What is mycorrhiza?
______ are controlled by the microbial herbicide Phytophthora palmivora.
Which of the following is the INCORRECT statement with respect to biocontrol agents?
From the following which one is NOT a bacterial herbicide?
Identify the INCORRECT statement regarding Bacillus thuringiensis.
Which of the following is the INCORRECT statement?
Identify the reason/s due to which Trichoclerma species is a potent biocontrol agent.
Farmers have reported over 50% higher yield of rice by using which of the following biofertilizers?
The free-living fungus Trichoderma can be used for ______.
Match the items in Column ‘A’ and Column ‘B’ and choose correct answer.
| Column I | Column II |
| A. Lady bird | i. Methano bacterium |
| B. Mycorrhiza | ii. Trichoderma |
| C. Biological control | iii. Aphids |
| D. Biogas | iv. Glomus |
The correct answer is:
Name any genetically modified crop.
Describe the main ideas behind the biological control of pests and diseases.
Organic farmer use Baculovirus as biological control agents. Explain.
- Give an example of a genus of virus used as narrow spectrum insecticidal biocontrol agent.
- How does its use serve as an aid in overall integrated pest management programme?
Why are the biocontrol agents preferred over the chemical pesticides?
