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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
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
Name the bioactive molecules produced by Trichoderma polysporum and Monascus purpureus.
Mention one advantage and one disadvantage to a farmer who uses them.
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?
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?
What for Nucleopolyhydro viruses are being used now a days?
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.
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.
Why are the biocontrol agents preferred over the chemical pesticides?
Which one of the following is NOT an action of biocontrol on a pest?
