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WAEC Agricultural Science 1991 (August) Question 17

Question 17

Farm Machinery and Mechanisation

Use the diagram (a disc plough with parts labelled I to V) to answer this question. Which of the labelled structure carries out the functions of the share, coulter and mouldboard in a mouldboard plough?

Diagram for this question
  1. A.I
  2. B.II
  3. C.III
  4. D.IV
  5. E.V.
Show the answer and explanation

Answer: D (IV)

Explanation

The concave disc (IV) cuts, lifts and turns the soil, doing the work of share, coulter and mouldboard.