1.

Natural pest controlling methods are useful to biodiversity. Comment it.

Answer»
  • Some insects control the harmful insects and they are called friendly insects. 

E.g : Spiders, Dragonfly, Krisopa etc. 

  • Trachoderma bacterium lives in the eggs of stemborer, tobacco caterpillar destroy the pests at the egg stage. 
  • Some bacteria like Bacillus Turengenisis destroy some pests.
  • Mixed crops also control some pests and diseases. 
  • Hence natural pest control methods are useful to biodiversity because these methods destroys only the selected pests.


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