Agric S

KIKAAYA COLLEGE SCHOOL END OF TERM 1 EXAMS 2008 S.4 AGRICULTURE PAPER 2 TIME: 2 HOURS INSTRUCTIONS: Answer all questions Read the questions carefully. 1. You provided with specimens A,B and C (a) Identify the specimens: (a)………………………………………… (b)……………………………………………. (c)……………………………………………… (b) State four observable signs of infestation of specimen A on an animal. (i)…………………………………………………………………………… (ii)…………………………………………………………………………... (iii)…………………………………………………………………………… (iv)…………………………………………………………………………….. (c) Name one part in an animal where specimen A is found. ……………………………………………………………………………… (d) Name any four possible measures that can be carried out to control specimen A (i)…………………………………………………………………………… ……………………………………………………………………………… (ii)………………………………………………………………………...... ……………………………………………………………… …................. (iii)………………………………………………………………………….. ……………………………………………………………………………… (iv)………………………………………………………………………….. ………………………………………………………………………………

(e) Mention any four adaptations that specimen C has to enable it survive in any given host animal. (i)…………………………………………………………………………… ……………………………………………………………………………… (ii)………………………………………………………………………… ……………………………………………………………………………… (iii)………………………………………………………………………… ……………………………………………………………………………… (iv)………………………………………………………………………… ……………………………………………………………………………… 2. You are provided with two garden soil samples labeled D1 and D2. You are required to measure 20cm3 of D1 and pour the content in a 100cm3 measuring cylinder labeled D1. Then measure 60cm3 of water and pour into the same measuring cylinder labelled D1. Stir the mixture until no bubbles are seen to escape. Repeat the experiment with soil sample D2 and record the final volume of D1 and D2. (a)(i) Final volume of

D1…………………………………………………… D2…………………………………………………….

(ii) What could have caused the loss in volume in both soil sample? …………………………………………………………………………… …....... ……………………………………………………………………………………. ……………………………………………………………………………………… (b) Calculate the percentage loss in volume for (i)

D1………………………………………………………………………

D2………………………………………………………………………………

(c) Identify soil samples D1 and D2 using the cylinder method and give a reason for your answer. D1……………………………………………………………………………… Reason………………………………………………………………………… …………………………………………………………………………………. D2………………………………………………………………………………. Reason………………………………………………………………………… ………………………………………………………………………………….. (d) State three uses of the components that has caused the loss in the final volume. (i)……………………………………………………………………………… …………………………………………………………………………………. (ii)………………………………………………………………………………. ………………………………………………………………………………..... (iii)………………………………………………………………………………. ………………………………………………………………………………….. 3. You are provided with specimen E and F (a) Give the identify of specimen E and F. E…………………………………………………………………………… F……………………………………………………………………………. (b) Name four nutrients provided by specimen E. (i)…………………………………………………………………………… (ii)……………………………………………………………………… (iii)………………………………………………………………………… (iv)…………………………………………………………………………..

(c) Explain four factors that make specimen E unsuitable for human consumption. (i)………………………………………………………………………… ……………………………………………………………………………… (ii)…………………………………………………………………………... ……………………………………………………………………………… (iii)………………………………………………………………………….. ……………………………………………………………………………… (iv)………………………………………………………………………….. ……………………………………………………………………………… (d) State any four properties that may contribute to good quality production of specimen (e) (i)…………………………………………………………………………… (ii)…………………………………………………………………… (iii)…………………………………………………………………………. (iv)………………………………………………………………………….. (f) State any four factors that affect the yield of specimen F. (i)…………………………………………………………………………… (ii)………………………………………………………………………… (iii)………………………………………………………………………… (iv)………………………………………………………………………… 4. You are provided with specimen G (a) Give the identify of specimen G. ……………………………………………………………………………... (b) Describe the appearance of Specimen G …………………………………………………………………………… …………………………………………………………………………… …… (c) (i) Identify the disease affecting specimen

……………………………………………………………………………… (ii) What is the causal organism responsible for the disease in c (i) above. ……………………………………………………………………………… (iii) Name two crops which can be affected by that disease. ……………………………………………………………………………… (d) Mention atleast four control measures of the disease affecting specimen G (i)………………………………………………………………………….... (ii)………………………………………………………………………….. (iii)………………………………………………………………………….. (iv)………………………………………………………………………….. 5. You are provided with specimens H, I,J,K and L which are farm tools can be found in a farm workshop. Answer the questions that follow. Specimen H

I

J

K

Identify

Features enabling Them do their work.

Maintenances in good working condition.

L

(i)………………………………………………………………………………… (ii)………………………………………………………………………………….

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