Multiple choice

Which of the following method(s) use(s) insects and some other organisms for removing weeds?

  1. Manual method

  2. Chemical method

  3. Biological control method

  4. Both manual and biological control methods

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Manual method refers to hand picking of the weeds. Chemical method refers to spray of weedicides to prevent the growth of weeds. Biological control method refers to the use of some insects or other organisms, which help in the destruction of weeds by feeding on them and thus is the correct option. 

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