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Key Facts: GCE A/L Agricultural Science Exam

50 MCQs

Paper 1 Question Count

Department of Examinations, Sri Lanka

5 Hours

Total Exam Time (Paper 1 & 2)

Department of Examinations, Sri Lanka

Grade S

Minimum Passing Grade

Department of Examinations, Sri Lanka

Subject 08

Official Subject Code

Department of Examinations, Sri Lanka

3 Languages

Offered in Sinhala, Tamil, & English

Ministry of Education, Sri Lanka

Sri Lanka GCE A/L Agricultural Science (Subject Code 08) is a foundational elective in Biological Science and Technology streams evaluated through a 50-item MCQ Paper 1 (2 hours) and an essay Paper 2 (3 hours). It serves as a primary qualification pathway for agricultural and bio-resource university degrees.

Sample GCE A/L Agricultural Science Practice Questions

Try these sample questions to review concepts for the GCE A/L Agricultural Science exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under the agro-climatic classification established by the Department of Agriculture in Sri Lanka, what is the minimum 75% probability annual rainfall threshold that defines the Wet Zone?
A.1,500 mm
B.1,750 mm
C.2,000 mm
D.2,500 mm
Explanation: Sri Lanka is classified into three major climatic zones based on 75% expectancy annual rainfall. The Wet Zone receives greater than 2,500 mm, the Intermediate Zone receives between 1,750 mm and 2,500 mm, and the Dry Zone receives less than 1,750 mm. This moisture boundary strongly dictates regional farming systems, soil orders, and crop selection.
2In the agro-ecological classification of Sri Lanka, which elevation boundary separates the Low-country from the Mid-country?
A.150 m above mean sea level
B.300 m above mean sea level
C.600 m above mean sea level
D.900 m above mean sea level
Explanation: Sri Lanka's agricultural elevation divisions are demarcated by altitude: Low-country extends from sea level to 300 m, Mid-country spans 300 to 900 m, and Up-country lies above 900 m. Combined with rainfall and soil criteria, these elevation boundaries form the matrix for the island's 46 agro-ecological sub-regions.
3Which monsoon wind system is primarily responsible for bringing the major agricultural rainfall season (Maha) across the Dry Zone of Sri Lanka?
A.Southwest monsoon
B.Northeast monsoon
C.First inter-monsoon
D.South-equatorial counter-current
Explanation: The Maha cultivation season extends from October through February/March and is supported primarily by the Northeast monsoon alongside the preceding second inter-monsoon. This rainfall refills major reservoir cascades and sustains the island's principal seasonal rice and highland field crop production in the Dry Zone.
4What is the primary agronomic purpose of establishing contour hedgerows of nitrogen-fixing trees in Sloping Agricultural Land Technology (SALT)?
A.Acting as physical barriers that trap moving sediment while providing green manure
B.Accelerating surface runoff velocity to prevent waterlogging on hillside slopes
C.Shading out cash crops completely to reduce daily crop evapotranspiration
D.Acidifying the topsoil profile to suppress competitive perennial grass species
Explanation: In Sloping Agricultural Land Technology (SALT), double hedgerows of leguminous shrubs planted along contours intercept detached soil particles, steadily forming natural terrace benches. Regular pruning of these hedgerows supplies nitrogen-rich organic biomass that is applied as mulch to cash crops cultivated in the alleys.
5In the traditional village tank cascade system (Ellangawa) of Sri Lanka, what is the core function of the upstream structure known as the 'Kuluwewa'?
A.Distributing drinking water directly to downstream residential homesteads
B.Trapping sediment and buffering flash runoff before water enters the main village tank
C.Serving as an industrial wastewater evaporation pond
D.Generating hydroelectric power for processing post-harvest paddy
Explanation: A Kuluwewa is a small upstream silt-retention pond situated in the upper catchment of an Ellangawa cascade. By capturing eroded sediments, floating debris, and heavy runoff, it prevents siltation of the primary downstream irrigation reservoir (Maha Wewa), thus preserving village water storage capacity.
6Why is crop cultivation in the Dry Zone of Sri Lanka strictly curtailed during the Yala season compared to the Maha season?
A.Dry Zone air temperatures drop below 10°C, causing cold shock in tropical crops
B.The central mountain massif intercepts the Southwest monsoon, leaving the Dry Zone rain-deficient and reliant on stored water
C.Dry Zone soils undergo irreversible salinization during May to September
D.Daylight duration decreases to less than six hours per day during the boreal summer
Explanation: During the Southwest monsoon (May to September), rain clouds shed moisture on the windward western hill slopes. As air descends over the leeward eastern and northern plains, it becomes warm and dry (Kachan dry winds), causing pronounced drought that limits Yala cultivation to areas with dependable reservoir irrigation.
7Which agro-ecological region in Sri Lanka features cool subtropical temperatures suitable for producing commercial temperate vegetables such as potato, leek, and carrot?
A.Low-Country Dry Zone (DL1)
B.Up-Country Wet Zone (WU1–WU3)
C.Low-Country Wet Zone (WL1)
D.Mid-Country Dry Zone (DM1)
Explanation: The Up-Country Wet Zone (elevations above 900 m, encompassing Nuwara Eliya and surrounding high plateaus) maintains mean monthly temperatures between 15°C and 20°C and frequent rainfall. These conditions provide the requisite thermal environment for temperate horticultural crops that experience heat stress in the lowlands.
8In a Sri Lankan village cascade system, what specific role is performed by the 'Kattakaduwa' strip situated between the tank bund and the upper paddy tract?
A.Absorbing seepage water and filtering dissolved salts to prevent salinization of downstream paddy lands
B.Discharging storm runoff directly into adjoining river basins via high-speed canals
C.Serving as a permanent concrete threshing platform for communal paddy harvests
D.Functioning as an open pit for burning farm crop residues
Explanation: The Kattakaduwa is an interceptor vegetative zone positioned immediately below the outer embankment of a reservoir. Deep-rooted salt-tolerant trees and vegetation growing here absorb mineralized seepage water, intercept heavy salt loads, and protect the top tier of paddy fields from salinity build-up.
9On agricultural land having a 15% to 30% slope gradient in the Mid-Country, which mechanical soil conservation practice is most effective in stabilizing steep topography?
A.Contour stone terracing with lock-and-spill drains
B.Broad-bed furrow cultivation laid out parallel to the vertical slope fall line
C.Deep chisel plowing along the direction of downhill runoff
D.Continuous herbicide-based clean weeding to expose bare topsoil
Explanation: Contour stone terracing utilizes dry stone masonry walls built along surveyed contour lines to intercept downhill soil movement. Coupled with lock-and-spill reverse-slope drains, it reduces effective slope length and velocity, gradually converting sloping ground into stable step terraces.
10Why does pressurized drip irrigation attain field water application efficiencies above 90% compared to traditional basin flooding in the Dry Zone?
A.It delivers water directly into the root zone at controlled rates, minimizing evaporation and deep percolation
B.It converts liquid water into atmospheric fog that is absorbed directly by foliar stomata
C.It requires saturating the entire field surface area before opening emitter orifices
D.It operates at extremely high hydraulic pressures exceeding 25 bar to pulverize weed seeds
Explanation: Drip irrigation discharges water drop-by-drop through regulated emitters positioned directly above or within the crop root zone under low operating pressure (1–2 bar). Because only the rhizosphere is wetted, evaporative loss from inter-row soil surfaces and deep percolation below the active root zone are kept to a minimum.

About the GCE A/L Agricultural Science Exam

Sri Lanka General Certificate of Education (Advanced Level) Agricultural Science (Subject Code 08) is an advanced academic elective offered within both the Biological Science and Technology streams. Administered annually by the Department of Examinations, Sri Lanka, the subject evaluates fundamental and applied agricultural disciplines, including agro-ecological zoning, soil management, plant nutrition, crop agronomy, integrated pest management, farm animal husbandry, milk and meat processing, agricultural economics, and extension methods. Paper 1 assesses conceptual clarity and analytical reasoning through 50 compulsory multiple-choice items, while Paper 2 evaluates deep technical exposition through structured questions and essay problems. Performance in this subject contributes directly to the candidate's Z-score calculation for state university admission into Faculties of Agriculture, Veterinary Medicine, and Biosystems Technology.

Exam sponsor: Department of Examinations, Sri Lanka (doenets.lk). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

The examination comprises two written papers: Paper 1 (2 hours, 50 compulsory multiple-choice questions, worth 50% of the total written mark) and Paper 2 (3 hours, structured essay and essay questions, worth 50% of the total written mark). Candidates respond in Sinhala, Tamil, or English.

Time Limit

Paper I: 2 hours; Paper II: 3 hours plus 10 minutes' reading time (total 5 hours 10 minutes)

Passing Score

Grade S or higher

Exam / Certification Fees

Free for school candidates; nominal fee for private candidates

Exam sponsor website

Reported exam pass rate: Approximately 60% to 70% of registered candidates obtain an S grade or higher in national sittings.. This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

15%

Agriculture and Environment

Agro-ecological zones of Sri Lanka, climatic parameters, climate change adaptation, sustainable agriculture, soil conservation measures (SALT, stone terracing), water resource systems, and micro-irrigation.

25%

Soil Science and Plant Nutrition

Soil physical properties (bulk density, porosity, moisture constants), soil texture and structure, soil reaction (pH) and liming, essential macro and micronutrients, organic manures, chemical fertilizer calculations, and soil fertility management.

25%

Crop Production and Horticulture

Seed technology, vegetative propagation techniques, nursery management, protected cultivation, agronomy of major Sri Lankan crops (paddy, tea, rubber, coconut, spices, vegetables, fruits), integrated pest management (IPM), and post-harvest technology.

20%

Animal Production and Husbandry

Livestock breeds suited to Sri Lankan zones, digestive physiology and Pearson square feed formulation, breeding systems and artificial insemination, dairy cattle management, poultry systems, and biosecurity protocols.

15%

Agricultural Economics and Extension

Farm record keeping, balance sheets, demand and supply elasticities, cost of production calculations, gross margin analysis, technology dissemination systems in Sri Lanka, and agricultural entrepreneurship.

Preparing for the GCE A/L Agricultural Science Exam

What You Need to Know

  • Passing score: Grade S or higher
  • Assessment: The examination comprises two written papers: Paper 1 (2 hours, 50 compulsory multiple-choice questions, worth 50% of the total written mark) and Paper 2 (3 hours, structured essay and essay questions, worth 50% of the total written mark). Candidates respond in Sinhala, Tamil, or English.
  • Time limit: Paper I: 2 hours; Paper II: 3 hours plus 10 minutes' reading time (total 5 hours 10 minutes)
  • Exam / certification fees: Free for school candidates; nominal fee for private candidates Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Frequently Asked Questions

What is the structure of the GCE A/L Agricultural Science examination?

The examination consists of two written components: Paper 1 has 50 compulsory multiple-choice questions (2 hours), testing broad theoretical and problem-solving concepts. Paper 2 is a 3-hour examination containing structured essay and open essay questions testing in-depth technical analysis and applied problem solving.

Which student streams can offer Agricultural Science at GCE A/L?

Agricultural Science (Subject Code 08) is primarily offered by students in the Biological Science stream (typically alongside Biology and Chemistry) and the Biosystems Technology stream. It is recognized by the University Grants Commission for university degree entry.

What university degree programs accept GCE A/L Agricultural Science?

Candidates achieving competitive Z-scores can gain admission to Bachelor of Science degree programs in Agriculture, Agricultural Technology and Management, Animal Science, Food Science and Technology, Biosystems Technology, and related applied life sciences across Sri Lankan national universities.

How are results graded for GCE A/L Agricultural Science?

Examinations are graded by the Department of Examinations on the standard Sri Lankan Advanced Level scale: Grade A (Distinction, typically 75%+), Grade B (Very Good Pass, 65-74%), Grade C (Credit Pass, 55-64%), Grade S (Ordinary Pass, 35-54%), and Grade F (Fail, below 35%). Z-scores are computed for university selection.

Are non-programmable calculators allowed during the examination?

Calculators and electronic communication devices are strictly prohibited in Paper 1 and Paper 2. All quantitative calculations—such as fertilizer blending, Pearson square rations, seed germination rates, and gross margin computations—must be executed manually.

How does this practice question bank assist student preparation?

This independent question bank offers 100 high-yield multiple-choice questions spanning all five core curriculum domains. Each question includes complete scientific rationales and detailed explanations for all incorrect answer choices to strengthen analytical skills.