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WAEC Agricultural Science 2007 Question 5

Question 5

Irrigation and Drainage

Water-logged soils impede good crop growth and development because

  1. A.the fibrous roots are destroyed
  2. B.crop roots are deprived of sufficient oxygen
  3. C.excessive water stops root growth
  4. D.soil around roots become too cold for root growth.
Show the answer and explanation

Answer: B (crop roots are deprived of sufficient oxygen)

Explanation

Water fills the pores and roots cannot get oxygen.