WAEC Agricultural Science 2016 Question 6

Question 6

Farm Machinery and Mechanisation

The diagram below shows some parts of a plough.
Which of the following functions is not associated with the part labelled I?

Diagram for this question
  1. A.Inverting of furrow slice
  2. B.Cutting through soil
  3. C.Pulverizing of the slice in some ploughs
  4. D.Enabling the plough to roll over obstacles
Show the answer and explanation

Answer: D (Enabling the plough to roll over obstacles)

Explanation

A mouldboard lifts, turns and breaks the slice; rolling over obstacles is a feature of disc ploughs.