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WAEC Agricultural Science 2026 Question 33

Question 33

Weeds and Weed Control

Systemic herbicides could be used for controlling

  1. A.annual weeds and biennial weeds only
  2. B.annual weeds and perennial weeds only
  3. C.biennial weeds and perennial weeds only
  4. D.annual weeds, biennial weeds and perennial weeds
Show the answer and explanation

Answer: D (annual weeds, biennial weeds and perennial weeds)

Explanation

Systemic herbicides move through the whole plant and kill all kinds of weeds.