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प्रश्न
Organic farmers prefer biological control of diseases and pests to the use of chemicals for the same purpose. Justify.
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उत्तर
Biocontrol means using biological methods to manage plant diseases and pests. Pathogens, pests, and weeds are the main threats to agriculture. Traditionally, they are controlled with insecticides and pesticides, but these chemicals are highly toxic and harmful to humans and animals, and they pollute the environment. Therefore, modern agriculture increasingly relies on biological methods to manage them. Different microbes are used as biocides to control microbial pathogens (such as viruses, mycoplasma, bacteria, and fungi), insect pests, nematodes, and weeds.
Examples of biocontrol agents include:
- Bacteria: Bacillus thuringiensis
- Fungi: Trichoderma
- Insects: Ladybird beetles and dragonflies
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संबंधित प्रश्न
Find out what the various components of the medium used for propagation of an explant in vitro are?
How has the use of Agrobacterium as vectors helped in controlling Meloidegyne incognitia infestation in tobacco plants? Explain in correct sequence.
Bt Cotton is resistant to ______.
Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produces (in the host cells).
Golden Rice:
A. GM rice
B. Rich in Vit A
C. Prevents blindness
D. Bruise resistant
Highlight any four areas where genetic modification of plants has been useful.
Explain with the help of one example how genetically modified plants can:
- Reduce usage of chemical pesticides
- Enhance nutritional value of food crops
"RNA interference has been used to produce transgenic tobacco plants to protect them from the infestation by specific nematodes." Explain the novel strategy exploited by the biotechnologists.
Name an organism that produces cry proteins.
Which one of the following bacteria are used to produce insect resistant transgenic cotton?
