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Microbes as Biocontrol Agents MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

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Microbes as Biocontrol Agents
  • Biocontrol refers to the use of biological methods for controlling plant diseases and pests. 
  • The very familiar beetle with red and black markings – the Ladybird is useful to get rid of aphids.
  • Dragonflies are useful to get rid of mosquitoes.
  • An example of microbial biocontrol agents that can be introduced in order to control butterfly caterpillars is the bacteria Bacillus thuringiensis (often written as Bt).
  • A biological control being developed for use in the treatment of plant disease is the fungus Trichoderma
  • Trichoderma species are free-living fungi that are very common in the root ecosystems.
  • They are effective biocontrol agents of several plant pathogens.
  • Baculoviruses are pathogens that attack insects and other arthropods.
  • The majority of baculoviruses used as biological control agents are in the genus Nucleopolyhedrovirus. 
  • These viruses are excellent candidates for species-specific, narrow spectrum insecticidal applications. 
  • They have been shown to have no negative impacts on plants, mammals, birds, fish or even on non-target insects. 
  • This is especially desirable when beneficial insects are being conserved to aid in an overall integrated pest management (IPM) programme, or when an ecologically sensitive area is being treated.
     

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