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Que.

Which of the following roles is performed by weeds?

  • A. They sometimes produce toxic substances which help crop growth.
  • B. They help to control crop pests and diseases and microorganisms.
  • C. They reduce crop yield and affect quality by competing for water, minerals, manures and fertilisers and sunlight.
  • D. All of these

Right Answer is :
C. They reduce crop yield and affect quality by competing for water, minerals, manures and fertilisers and sunlight.
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