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प्रश्न
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:
विकल्प
A - ii, B - iv, C - iii, D - i
A - iii, B - iv, C - ii, D - i
A - iv, B - i, C - ii, D - iii
A - iii, B - ii, C - i, D - iv
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उत्तर
A - iii, B - iv, C - ii, D - i
APPEARS IN
संबंधित प्रश्न
Name a genus of baculovirus.
How do organic farmers control pests?
Name and explain the type of interaction that exists in mycorrhizae and between cattle egret and cattle.
Give reasons for the following:
Nitrogenous fertilizers are not applied in fields where leguminous crops grow.
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.
From the following which one is NOT a bacterial herbicide?
Farmers have reported over 50% higher yield of rice by using which of the following biofertilizers?
Organic farmer use Trichoderma as biological control agents. Explain.
Which of the following is incorrect regarding Bacillus thuringiensis?
- 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?
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?
give any two examples of microbial herbicides.
Explain how Bacillus thuringiensis acts as a bio-control agent.
Which one of the following is NOT an action of biocontrol on a pest?
What is the primary definition of biocontrol?
What is the function of substances such as viridin, gliotoxin, and gliovirin produced by Trichoderma species?
What is the relationship between biopesticides and chemical pesticides in terms of safety?
