CSEE Agriculture Paper 1 2021 — Past Paper & Online Quiz

0. 0 alamas

The teacher should prepare a practical activity to enable the candidates to identify, collect and preserve the following crop pests from the growing crops in the field and from the produce in the store: maize stalk borer, maize weevils, leaf hoppers, large grain borer, cut worms, bean leaf beetle, bean aphids, american bollworms, moth, armyworms, locusts, bean bruchids and stainers.

(ii) Put the pets in specimen bottles and preserve them with formalin. 0 alama

(iii) Label the bottle as follows: common name, scientific name, the crop and part of the crop attacked, damage caused, control measures and date of collection. 0 alama

(sampl) Why do we collect and preserve pests? 0 alama

Boresha ili kuona majibu ya mfano.

1. 4 alamas

(none) Why did place each weed between the middle pages of the newspaper? 1 alama

(pract) Estimating the amount of planting materials required in an area: This practical can be done by both CSEE and ACSEE candidates. 0 alama

(1) What are your observations? 0 alama

(a) Prepare the apparatuses and materials for each candidate. 0 alama

(vii) Draw the diagonals of the square, and write down on the left hand side corners of the square the protein value of the whole maize grains and the fish meal, which are the feedstuffs you are going to use. 4 alama

(a) Describe the procedure for preparing a composite soil sample from a field for laboratory analysis. 2 alama

((viii) Subtract diagonally across the square the small number from the large number for both the maize and fish meal disregarding the sign. 4 alama

(2) What is the conclusion of your observations? 0 alama

(objec) The teacher should prepare a practical activity to enable the candidates to estimate the amount of planting materials required in an area. 0 alama

(b) Why is it important to air dry soil samples at room temperature before grinding and sieving? 2 alama

(b) Ensure gas systems and Bunsen burners are working properly. 0 alama

(iii) Explain the note on the importance of checking the workability of hand sprayers before use. 1 alama

(ix) The resulting figures represent the parts of maize and fishmeal which will make the ration. Now add the parts together to obtain a base which will be used to calculate the amount of maize and fish meal in 100 kg of the feed. 3 alama

(c) Check if thermometers are functioning properly before use. 0 alama

(c) It should be light in weight yet sufficiently strong, easily workable and repairable. 0 alama

(3) Name the substance that was lost after strong heating. 0 alama

(d) Abomasum 0 alama

(x) From this last square, calculate the amount of maize and fish meal in kilograms. 3 alama

(i) Measure 100 cm$^3$ of water and ethanol in two separate 250 cm$^3$ beakers. 0 alama

(d) If the colour of the soil solution matches with the colour for pH 7 on the colour chart, what is the pH of the soil? 1 alama

(ii) Immerse thermometers in each of the separate beakers containing water and ethanol. 0 alama

(e) State any two precautions that should be taken by the laboratory technician before starting the practical activity as mentioned in the important notes. 2 alama

(e) Describe the mouthparts and the structures associated with them. 2 alama

(xi) After obtaining the amount of maize and fish meal required for 100kg ration, mix the ingredients thoroughly. 1 alama

(f) Explain the role of the colour indicator dye in this experiment. 2 alama

(f) Mouthparts 0 alama

(g) What would be the likely observation and conclusion if distilled water was not added in step (iv)? 3 alama

(h) Suggest one reason why a fresh soil sample should be given to each candidate. 3 alama

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2. 4 alamas

(2) Name three types of soil samples. 0 alama

(a) List four foreign substances that can be added to pure honey to prepare impure honey. 2 alama

(2a) The volume of water poured in the cylinder = 200 cm3 0 alama

(i) How do you check if a weighing balance is accurate? 1 alama

(none) Interpret your observations in the experiment above. 2 alama

(a) Record your observations of the Tsetse fly based on its external structures. 3 alama

(ii) What should you do if the balance reading is different from the known mass value? 1 alama

(b) State the phylum to which the Tsetse fly belongs and explain how it affects livestock production. 2 alama

(b) List four substances that can be added to pure milk to prepare adulterated milk. 2 alama

(2b) The volume of water + soil in the cylinder before shaking = Z cm3. 0 alama

(2c) The volume of water + soil in the cylinder after shaking = Y cm3. 0 alama

(c) List two preventive measures against mastitis in dairy cattle. 2 alama

(iii) Why is calibration of a weighing balance important in a laboratory setting? 1 alama

(c) Omasum 0 alama

(d) Abomasum 0 alama

Boresha ili kuona majibu ya mfano.

3. 10 alamas

The text below describes a practical activity on selection of eggs for incubation. Study the text and answer the questions that follow.

(3) Determine the texture of the three soil samples. 0 alama

(none) Identify the suitable specimen to be used as an engine lubricant from the results of the experiment. 0 alama

(i) What is the ratio of ethanol to distilled water used to prepare 70% Ethanol? 1 alama

(a) State any two (2) examples of monocotyledonous crops from the list provided. 2 alama

(a) State the objective of the practical activity. 2 alama

(ii) What is the purpose of preparing 10% formalin as described in the text? 1 alama

(b) List any four specimens and materials required for the practical activity. 4 alama

(b) State any two (2) examples of dicotyledonous crops from the list provided. 2 alama

(iii) What precautions should be taken when preparing and handling formalin, and why? 1 alama

(c) Explain the function of a cotyledon in a seed. 2 alama

(c) Explain the importance of a dark environment in this practical activity. 2 alama

(d) State the procedure for candling an egg. 2 alama

(d) Describe the difference in the cotyledon of a monocot seed compared to that of a dicot seed in terms of size and food content. 4 alama

(e) State three (3) other parts of the plant, apart from the seed, that can be used to differentiate between monocots and dicots. 3 alama

Boresha ili kuona majibu ya mfano.

5. 1 alama

According to the text, how can one be sure of getting pure honey?

A. By checking its viscosity and taste

B. By purchasing it from a reputable brand

C. By getting it directly from the producer in raw form

D. By performing laboratory tests

7. 1 alama

What is essential for schools offering agriculture to have for preparing and conducting practical examinations?

A. Large lecture halls.

B. Extensive libraries with agricultural books.

C. Laboratories with necessary infrastructures.

D. Student accommodation facilities.

8. 1 alama

What should well-managed and organised laboratories adhere to during practical examinations?

A. Competitive pricing.

B. Marketing trends.

C. Safety precautions.

D. Public relations.

9. 1 alama

A laboratory is defined in the text as a room or building designed for:

A. Lectures and seminars.

B. Scientific experiments.

C. Student recreational activities.

D. Administrative meetings.

10. 1 alama

Preparations for practical examinations start immediately after receiving a:

A. Syllabus update.

B. Grant approval.

C. Checklist.

D. Laboratory renovation plan.

11. 1 alama

The items to be used for Agriculture laboratory practicals are taken from the:

A. Textbooks.

B. Syllabus.

C. Teacher's personal notes.

D. Agricultural magazines.

12. 1 alama

Preparations for practical examinations end up when preparing the items as instructed in the:

A. Annual examination timetable.

B. 3 hours advance instructions.

C. School admission policy.

D. Laboratory safety manual.

13. 1 alama

According to the text, who must observe safety precautions when preparing and conducting practical examinations?

A. Students only.

B. School administrators only.

C. Teachers and laboratory technicians.

D. NECTA officials only.

6. 4 alamas

The following experiment is conducted to test for honey purity.

(a) Define soil texture. 2 alama

(a) List the specimens, apparatuses and materials required for Experiment 1. 2 alama

(b) Define soil structure. 2 alama

(b) Describe the behaviour of pure honey and impure honey when added to water in Experiment 1. 2 alama

(c) List four substances that can be added to pure milk to adulterate it. 2 alama

(c) Define porosity. 2 alama

(d) Sharpen the saw 1 alama

(d) Why is it important to ensure the drying room is free from sample contaminating factors? 1 alama

Boresha ili kuona majibu ya mfano.

4. 0 alamas

Soil sampling for agricultural purposes provides a means to obtain a representative soil sample for making inference of various soil characteristics in the particular land area. A soil sample represents a particular soil type with unique characteristics. The validity and quality of the soil data obtained from soil sample testing or observation depends on the quality of the soil sample. In the Agricultural Science subject, soil sampling is a necessary activity for obtaining quality soil samples that can be used for various soil science practical activities in learning or assessing soil physical, chemical and biological properties.

(i) What is the initial step after ensuring the hose fits securely on the gas valve and the burner? 1 alama

(a) Describe the procedure for calibrating a weighing balance. 3 alama

(a) Fill a long glass with ice. 0 alama

(d) Insert the thermometer in the glass that is 5.1 cm deep. 0 alama

(ii) How is the flame adjusted to produce an appropriate flame? 1 alama

(b) Outline the steps for preparing 70% ethanol as a preservative. 3 alama

(b) Pour cold water into the glass and make sure the water is cold so that it does not melt the ice. 0 alama

(e) Hold the thermometer inside the glass for 30 seconds. 0 alama

(iii) Why is it important to have an appropriate flame from a Bunsen burner? 1 alama

(c) Explain how to check if a Bunsen burner is working correctly. 3 alama

(c) Stir the ice and water for 15 seconds. 0 alama

(f) Confirm that the thermometer reads 00C. 0 alama

(d) Press the second button to reset the stopwatch to zero. The second button is also used to record split times or lap times. 0 alama

(e) Outline the procedure for checking the working of a Bunsen burner. 4 alama

(f) Confirm that the thermometer reads 00C. 1 alama

Boresha ili kuona majibu ya mfano.

14. 10 alamas

Discuss the principles of livestock health management.

(a) Industrial application 1: 1 alama

(none) Why are soil profile samples and samples for examining soil structure and colour prepared using a special procedure? 3 alama

(b) Industrial application 2: 1 alama

(c) Name two components of soil that require oxygen for respiration. 2 alama

(d) What is the basic component of soil mentioned in the overview? 1 alama

Boresha ili kuona majibu ya mfano.

Agriculture · Karatasi 1 · 2021

Agriculture · Karatasi 1 · 2021

Sehemu A

Sehemu B

Sehemu D

Fungua