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Biotechnology and its Applications — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYBiotechnology and its Applications5 Marks
Question
  1. How do organic farmers control pests? Give two examples.
  2. State the difference in their approach from that of conventional pest control methods.
✓

Answer

  1. Natural predation/biological control.

Examples - lady bird used to kill aphids// dragon flies used to kill mosquitoes// Bacillus thuringiensis used to kill cotton bollworm/caterpillar/butterfly caterpillar.

  1.  
S.No. Conventional Pest Control Organic farming based pest control
1. Use of chemical insecticides & pesticides. No chemical used.
2. Harmful to non-target organisms. Not harmful to non-target organisms.
3. Cause environmental pollution. No adverse impact on environment.

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