UNEB UCE Agriculture Past Papers Year 2017

UNEB UCE Agriculture Past Papers Year 2017

1. You are provided with specimens A and B. You are required to carry out tests on the specimen to establish their characteristics.
   1. 1. Put specimen A into a measuring cylinder up to 25cm3 mark while tapping the cylinder to compact the specimen.
         Add specimen B on top of specimen A in the same cylinder up to a 50cm³ mark while tapping the cylinder to compact the specimen.
         Pour the mixture of specimen A and B in the cylinder onto a piece of paper provided a mix thoroughly using a spoon. Label the mixture, specimen C.
         i) Now put specimen A into a boiling tube up to a level of 11cm from the bottom, while tapping the boiling tube.
         Measure 15cm³ of water and gently pour it into the boiling tube containing specimen A and at the same time start a stop clock. After 2 minutes measure the distance of water moved, into specimen A and record it in Table 1.
         Table 1

         Specimen	Dry Specimen column length (cm)	Distance moved by water into specimen after 2 minutes (cm)
         A
         B
         C

   1. ii) Repeat the procedure in (a) (i) using specimen B and record the distance moved by water, into in Table 1.

   iii) Repeat the procedure in (a)(i) using specimen C and record the distance moved by water, into C, in Table 1.

2. Express the distance moved by water into each specimen as a percentage of the length of column of each dry specimen in the boiling tube before adding water.i) Repeat the procedure in (a) (i) using specimen B and record the distance moved by water, into B, in Table 1.
3. State the characteristics being investigated.
4. Explain the difference in the results in (a) (i) and (a) (ii).
5. From your results, state the effect of mixing specimens A and B

2. Specimens E1, E2, E3 and E4 are workshop tools.
a)    State the function of each specimen.
b)    Describe the features on each specimen that makes it suitable for its functions.
c)    Describe how specimen E1  is used to perform its function.
3.    Specimens F1, F2, F3 and F4may be used in crop production.
a)    Place the specimens into two named groups according to their origin.
Group 1
Group 2
b)    i) Explain why it is not recommended to use specimen F2 in its present state.
ii) Describe how specimen F2 may be treated to make it suitable for use.
c)    State two measures which can be taken to maintain the quality of specimen F3 in storage.
d)    Give two advantages of using;
i) F3 over F4
ii) F4 over F3
4.   Specimens G1 and G2 are obtained from animals.
Observe the specimens and their contents then describe the structure of each specimen and its contents in Table 2.

1. Name the farm animals from which each specimen was obtained.
2. From which system of the farm animal was each specimen obtained?
3. How is each specimen suited for its function?

5. Specimens H₁, H₂, H₃ and H₄ can be used as livestock feeds.

•     a) State two benefits of feeding each of the specimens to livestock.
•     b) Give three advantages of feeding H₃ instead of H₄ to animals.
•     c) Describe how specimen H₂ is prepared