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प्रश्न
Give an example of a bacterium, a fungus and an insect that are used as biocontrol agents.
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उत्तर
Examples of biocontrol agents are:
- Bacterium: Bacillus thuringiensis (used against insect pests and mosquito larvae).
- Fungus: Trichoderma (controls many plant diseases).
- Insect: Ladybird (control aphids) and dragonflies (control mosquitoes).
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संबंधित प्रश्न
Trichoderma konigi is a source of _______ enzyme.
(A) invertase
(B) lipase
(C) pectinase
(D) cellulase
Name and explain the type of interaction that exists in mycorrhizae and between cattle egret and cattle.
How do mycorrhizae act as biofertilizers? Explain.
Mention one advantage and one disadvantage to a farmer who uses them.
What is VAM?
Give reasons for the following:
Nitrogenous fertilizers are not applied in fields where leguminous crops grow.
Organic farmers prefer the biological control of diseases and pests to the use of chemicals for the same purpose. Justify
Why are the spores of Bacillus thuringiensis used as bioinsecticide?
Give the biological name of the following:
The fungus that is being developed as a bio-control agent.
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 |
______ are controlled by the microbial herbicide Phytophthora palmivora.
Identify the reason/s due to which Trichoclerma species is a potent biocontrol agent.
How has the bacterium Bacillus thuringiensis helped us in controlling caterpillars of insect pests?
Which of the following is incorrect regarding Bacillus thuringiensis?
Explain how Bacillus thuringiensis acts as a bio-control agent.
Why are the biocontrol agents preferred over the chemical pesticides?
Which one of the following is NOT a bioherbicide of bacterial origin?
Which one of the following is NOT an action of biocontrol on a pest?
