eB. test cove 01203020 FORM TP 2011043 MAY/JUNE 2011 ‘© CARIBBEAN EXAMINATIONS COUNCIL SECONDARY EDUCATION CERTIFICATE, EXAMINATION AGRICULTURAL SCIENCE, (Single-Award) General Proficiency Paper 02 2 hours ‘THESE “TIONS CAREFI 1, There are nine questions in this booklet, six in Section I and three in Section IL. Answer ALL questions. 2. Each question in Section I carries 4 marks. Each question in Section II carries 12 marks. 3. Write your answers in the spaces provided in this booklet. DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO. Copyright © 2009 Caribbean Examinations Council All rights reserved.SECTION Answer ALL questions in this section. ‘Write your answers in the spaces provided in this booklet. ‘Mrs James gets 10 hectares of arable land for agriculture. (a) State TWO factors of production that she must consider. (@ marks) (b) Mrs James completes a loan application form but is unsuccessful in getting the loan. ‘Suggest TWO criteria required to obtain a loan. (2 marks) ‘Total 4 marks Caribbean agriculture is affected by many constraints (challenges). One constraint is a negative attitude towards agriculture, (a) Name TWO OTHER constraints affecting agriculture in the Caribbean. © @ marks) (b) Provide TWO arguments to convince your fellow students to become involved in agriculture. (@ marks) Total 4 marks GO ON TO THE NEXT PAGE-3- Crop rotation is often recommended to farmers because it reduces levels of pests and diseases. (@) Briefly explain how crop rotation reduces pests and diseases. ‘Qmarks) (6) A farmer wants to grow com, sweet potato, beans and lettuce. Complete the following crop rotation sequence which can be used for growing these crops. a) Corn @) Q) GB) (2 marks) Total 4 marks GO ON TO THE NEXT PAGEao An agronomist conducts an experiment to study the effect of soil compaction on tuber production of yam. (@) Name the part of the plant that is used for propagating yam, (mark ) (6) The plot of yam becomes heavily infested with weeds. State ONE effect this is likely to have on the production of yam. a mark) (©) Table 1 shows the results of the experiment conducted by the agronomist. TABLE 1: ‘THE EFFECT OF SOIL COMPACTION ON TUBER YIELD IN YAM. Degree of Soil ‘Tuber Yield Compaction (tha) Not compacted 20 Slightly compacted 15 Moderately compacted 2 Highly compacted 7 Describe the relationship between soil compaction and tuber yield, shown in Table 1. (1 mark ) (@ A farmer attempts to till a compacted soil with a garden fork but he is unsuecessfl Recommend ONE tillage implement that can be used to break up the compacted layer. (mark) Total 4 marks GO ON TO THE NEXT PAGE,5. A rabbit farmer needs to improve production on his rabbitry. (@) State TWO breeding methods used in rabbit production. (2 marks) (b) _Toimprove production of the next generation, the farmer decides to select rabbits showing high growth rates. Suggest TWO OTHER qualities or traits he may select. (@ marks) Total 4 marks GO ON TO THE NEXT PAGE,6. (@)__ Figure | and Figure 2 show the digestive tract of a goat and a broiler bird respectively. ' ul ( J | LL seme ¥ ) J Figure 1. Digestive tract of a goat Figure 2. Digestive tract of a broiler bird Identify the structures labelled X in Figure 1 and Y in Figure 2. ~ @ marks) (b) A farmer digs a shallow pond on a clayey soil to rear tilapia. After filling the pond, the ‘water almost completely drains out. (i) Suggest the MOST likely cause of this problem, (mark) (ii) Recommend ONE solution to this problem, (i mark ) ‘Total 4 marks GO ON 10 THE NEXT PAGESECTION I Answer ALL questions in this section. ‘Write your answers in the spaces provided in this booklet, 7. (a) Table 2 is an example of an incomplete breeding record of @ doe. Three of the headings are missing. TABLE 2: BREEDING RECORD OF A DOE, Buck Number of | Number of Number Used Offspring | Offspring Weaned Born Alive | Died ‘Complete the record by inserting the following headings in the correct order in Table 2. + Date doe kindled + Date mated = Date weaned @G marks) GO ON TO THE NEXT PAGE,-8- (>) Farmer Raj grows com and rears goats, Table 3 shows the financial accounts for his mixed farm enterprise. TABLE 3: FINANCIAL ACCOUNT Item ‘Money ($) Goats sold 250.000 Replacement does 55.000 Housing and equipment 100 000 Farm operator salary 20.000 Cost of com seeds 5.000 Subsidy on land preparation 10 000 Feed costs, 50.000 Sale of com 50.000 Casual labour 10000 (Using the information in Table 3, list the variable costs and the fixed costs. Variable Costs ‘ ( marks) GO ON TO THE NEXT PAGE,-9- Gi) Calculate the gross income and the net income. Show all your working. Gross income ‘Net income (4 marks) (ii) State whether or not the farmer's business is successful. Explain your answer. GO ON TO THE NEXT PAGE-10- (@) —_@_ State TWO effects that the overuse of fertilisers may have on the environment. “@ marks) (i) State ONE benefit of mulching. (mark) (6) A farmer cultivates a leafy vegetable crop and a root crop on flat land. Compare the cultivating practices (similarities and differences) of these TWO crops under the following headings: @ Land preparation (ii) Fertiliser application Gil) Harvesting and post-harvest handling GO ON TO THE NEXT PAGE-u- (@ marks) ‘Total 12 marks GO ON TO THE NEXT PAGE@ (b) -12- Name a meat breed for EACH of the following classes of livestock: @ Pig (ii) Goat (iii) Rabbit B marks) An Agricultural Science student carried out an experiment over a four-week period to evaluate the performance of rabbits on a forage diet and on a concentrate diet. Table 4 shows the results of the experiment. ‘TABLE 4: FEEDING EXPERIMENT ON RABBITS Week | Average Weight of Rabbit Average Weight of Rabbit ‘ona Forage Diet (kg) on a Concentrate Diet (kg) >| oo | 04 2 05 06 3 09 12 4 2! 14 (i) Onwhich of the diets, forage or concentrate, did the rabbits gain MORE weight? (mark) Gi) Calculate the increase in average weight of the rabbits on the concentrate diet, from one week to four weeks. (1 mark ) GO ON TO THE NEXT PAGE-B- (iii) At the end of four weeks, an average of 4.2 kg of feed was consumed by each rabbit. Calculate the Feed Conversion Ratio (FCR) on the concentrate diet, using the data in Table 4 on page 12. (2 marks) (iv) Explain the importance of Feed Conversion Ratio in livestock production, (2 marks) (& One rabbit in the experiment showed the following signs: Frequent shaking of its head ~ ‘Scabs in its ear _ A foul-smelling substance oozing from the ear Suggest the likely cause of this condition and state TWO methods for controlling it. @ marks) ‘Total 12 marks