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WAEC Agricultural Science 1999 Question 34

Question 34

Weeds and Weed Control

Which of the following weeds is dispersed by wind?

  1. A.Pig weed (Boerhavia diffusa)
  2. B.Goat weed (Ageratum conizoides)
  3. C.Hausa thorns (Acanthospermum hispidum)
  4. D.Tridax (Tridax procumbens).
Show the answer and explanation

Answer: D (Tridax (Tridax procumbens).)

Explanation

Tridax seeds have feathery hairs (pappus) carried by wind.