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प्रश्न
Explain the significant role of the genus Nucleopolyhedrovirus in an ecological sensitive area.
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उत्तर
The genus Nucleopolyhedrovirus plays a key role in ecologically sensitive areas by acting as a species-specific biological control agent for insect pests. It kills target pests without harming plants, mammals, birds, fish, or beneficial insects, helping to conserve biodiversity and aid integrated pest management.
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संबंधित प्रश्न
With the help of a neat and labelled diagram explain VAM (vesicular arbuscular mycorrhizae).
Trichoderma konigi is a source of _______ enzyme.
(A) invertase
(B) lipase
(C) pectinase
(D) cellulase
How do organic farmers control pests?
Mention one advantage and one disadvantage to a farmer who uses them.
What is VAM?
Name a genus of fungi that forms a mycorrhizal association with plants.
Give two examples of microbial pesticides with their hosts.
Why are the spores of Bacillus thuringiensis used as bioinsecticide?
Give the biological name of the following:
The microbe used to control insect larvae growing on cotton.
Write a note on biocontrol agents.
Select the odd one from given herbicides.
Match the column A with B and rewrite correct pairs
| A | B | |
| I | Mycoherbicides | Cactoblastis |
| II | Bacterial herbicides | Alternaria |
| III | Insects as herbicides | Xanthomonas |
Which of the following can be killed using Nosema locustae?
Which group features jointed appendages?
Which one of the following statements is WRONG in relation to transgenic Bt cotton plant?
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:
A farmer grew 2 varieties of corn crops in fields A and B. He grew normal corn crops in field A and GM corn crops in field B. He observed corn borers attacked only in field A. To control it, spores of Bt were sprayed in field A.
- Name the gene in the spores responsible for the control of this pest.
- What effect will the spores of Bt have on the insect pest?
- How has field B developed resistance against this pest?
Explain how Bacillus thuringiensis acts as a bio-control agent.
