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प्रश्न
Describe the main ideas behind the biological control of pests and diseases.
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उत्तर
Biological control means life against life. It’s a natural and eco-friendly concept. It employs natural organisms to control the population of pathogens and pests in an ecosystem. Classical examples are Trichoderma which is an antagonist against many soil-borne plant pathogens. Similarly, Penicillium inhibits the growth of Staphylococcus and therefore has been successfully used in the production of Penicillin antibiotics to control many human bacterial pathogens.
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संबंधित प्रश्न
With the help of a neat and labelled diagram explain VAM (vesicular arbuscular mycorrhizae).
State the medicinal value and the bioactive molecules produced by Streptococcus, Monascus and Trichoderma.
How do mycorrhizae act as biofertilizers? Explain.
Mention one advantage and one disadvantage to a farmer who uses them.
What is VAM?
Give an example of a bacterium, a fungus and an insect that are used as biocontrol agents.
Give the biological name of the following:
The microbe used to control insect larvae growing on cotton.
Which of the following is TRUE regarding Bacillus thuringiensis?
Which of the following is the host for microbial pesticide Beauveria bassiana?
Identify the reason/s due to which Trichoclerma species is a potent biocontrol agent.
Which one of the following statements is WRONG in relation to transgenic Bt cotton plant?
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:
How do microbes reduce the environmental degradation caused by chemicals?
Organic farmer use Trichoderma as biological control agents. Explain.
Organic farmer use Baculovirus as biological control agents. Explain.
give any two examples of microbial herbicides.
Why are the biocontrol agents preferred over the chemical pesticides?
