Advertisements
Advertisements
प्रश्न
What for Nucleopolyhydro viruses are being used now a days?
Advertisements
उत्तर
Necleopolyhydroviruses are used for the biological control of insect pesto.
APPEARS IN
संबंधित प्रश्न
Name a genus of baculovirus.
Mention one advantage and one disadvantage to a farmer who uses them.
Why are baculoviruses considered good biocontrol agents?
Give two examples of microbial pesticides with their hosts.
How does the activity of each one of the following help in organic farming?
Mycorrhiza
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 is the INCORRECT statement with respect to biocontrol agents?
From the following which one is NOT a bacterial herbicide?
Which of the following is the INCORRECT statement?
Identify the reason/s due to which Trichoclerma species is a potent biocontrol agent.
Which group features jointed appendages?
Farmers have reported over 50% higher yield of rice by using which of the following biofertilizers?
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:
Describe the main ideas behind the biological control of pests and diseases.
Many members of genus Glomus form a mycorrhizal association with plants. Elaborate how is this association beneficial to the plants.
Organic farmer use Trichoderma as biological control agents. Explain.
Organic farmer use Baculovirus as biological control agents. Explain.
Which of the following is incorrect regarding Bacillus thuringiensis?
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?
Protozoan like Nosema locustae is used for controlling the target pests like ______.
