passwella.
Menu

WAEC Agricultural Science 1991 (August) Question 7

Question 7

Soil Properties

Which of the following does not occur as a result of poorly drained soil?

  1. A.Mottling near the top
  2. B.Decrease in rooting depth
  3. C.Change in colour of the subsoil
  4. D.Decrease in organic matter content
  5. E.Increase in oxygen level of the soil.
Show the answer and explanation

Answer: E (Increase in oxygen level of the soil.)

Explanation

Waterlogging drives air out of the soil, so oxygen falls rather than rises.