TEST OF PRACTICAL KNOWLEDGE QUESTION Diagrams H and I illustrate tractor-coupled implements. Use them to answer questions (a) - (c) (a) Identify the impleme...

Assessment: WAEC SSCE - Agricultural Science - 2006 Subject: Agricultural Science

Question 1 Report

TEST OF PRACTICAL KNOWLEDGE QUESTION

Diagrams H and I illustrate tractor-coupled implements. Use them to answer questions (a) - (c)

(a) Identify the implements illustrated by diagrams H and I.

Specimen H;	Specimen I;
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(b) Name the parts labelled I -X.

(c) State one function of each or parts labelled I -IX.

Answer

Part	Function
I. Coupling point	Provides the point of attachment of the implement to the tractor.
II. Beam (frame)	Holds the discs in position and helps to increase the depth of penetration.
III. Scraper	Removes soil that clings to the disc during operation.
IV. Disc	Makes horizontal and vertical cuts, cutting and inverting the soil.
V. Furrow wheel	Provides a balancing effect and enables the plough to jump over stones or stumps.
VI. Leg (standard)	Attaches the disc to the beam.
VII. Coulter	Makes the vertical cut (opens the furrow).
VIII. Share	Makes the horizontal cut under the soil.
IX. Mouldboard	Turns the soil over and buries the weeds.

Part	Function
I. Coupling point	Provides the point of attachment of the implement to the tractor.
II. Beam (frame)	Holds the discs in position and helps to increase the depth of penetration.
III. Scraper	Removes soil that clings to the disc during operation.
IV. Disc	Makes horizontal and vertical cuts, cutting and inverting the soil.
V. Furrow wheel	Provides a balancing effect and enables the plough to jump over stones or stumps.
VI. Leg (standard)	Attaches the disc to the beam.
VII. Coulter	Makes the vertical cut (opens the furrow).
VIII. Share	Makes the horizontal cut under the soil.
IX. Mouldboard	Turns the soil over and buries the weeds.

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