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Agricultural Science Paper 1, May/June 2008  
Questions:   1 2 3 4   Main
General Comments

Question 4

    • Identify specimens I, J and K.
    • State three functions of each of specimens I, J and K to the animal. Name the process involved in preserving fresh quantity of specimen L.
    • Give five products that can be produced from specimen L.
    • [I1/2 marks] [9 marks] [2 marks]
  • This question was well-attempted by the candidates. In 4(a), majority of the candidates could identify specimens I (Piece of liver); J (piece of ruminant skin) and K (piece of rumen/part of ruminant stomach).
  • In 4(b), although most of the candidates were able to state the functions of specimens I and J to the animal they could not state functions of specimen K to the animal. Similarly, in 4( c), majority of the candidates could not name the process involved in preserving fresh quantity of specimen L (Milk).


The expected answers include:
Functions of Specimen K (Rumen)

    • Mechanical breakdown of coarse fibrous feeds into smaller particles
    • Involved in the digestion of fibrous feed by ruminant
    • Vitamin B synthesis
    • Absorption of Volatile Fatty Acids
    • Fermentation of carbohydrate substances into simpler compounds
    • Storage of hurriedly ingested feed for further digestion later (Rumination
    •  Low-quality proteins are converted to higher quality proteins inside the rumen
    •  Propulsion of ingested feed into other stomach compartments
    • Harbours millions of microbes which aid fibre digestion
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