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WAEC Agricultural Science: practice questions.
12 free questions with answers and explanations, plus the topics to revise.
Below are free WAEC Agricultural Science practice questions with answers and explanations. They are original eZine questions, written and reviewed by teachers in the style of the WAEC WASSCE; we do not publish past questions. eZine's published WAEC Agricultural Science bank holds 194 questions across 42 topics (counted 29 October 2026); the largest topics are Agricultural Laws and Reforms, Animal reproduction, Classification of selected crops.
eZine's WAEC subject mock uses 50 questions in 60 minutes estimated. WAEC sets the objective paper's length per subject and publishes it in each subject's syllabus; eZine holds no WAEC paper figures yet, so this is a practice default.
WAEC Agricultural Science practice questions
Choose an option to check it, or open the answer. Each is an eZine practice question (original, teacher-reviewed).
Question 1 · Agricultural pollution
Dead fish are found in a stream below a cocoa farm the day after heavy spraying with insecticide. The MOST likely cause is
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Answer: D. pesticide drift and run-off
Insecticides washed or drifted into water kill fish. A clean stream, shade and lime do not kill fish this way.
eZine practice question (original, teacher-reviewed)
Question 2 · Animal reproduction
The release of a mature ovum from the ovary is called
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Answer: C. ovulation
Ovulation releases the egg. Implantation is attachment of the embryo, parturition is birth and lactation is milk production.
eZine practice question (original, teacher-reviewed)
Question 3 · Factors Affecting Crop Production
Which is an edaphic factor affecting crop production?
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Answer: C. Soil drainage
Edaphic factors relate to soil, such as drainage. Humidity, wind and day length are climatic.
eZine practice question (original, teacher-reviewed)
Question 4 · Agricultural Value Chain
Which is an importance of agricultural value chain development to Nigerian farmers?
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Answer: A. Better prices and less waste
Linking to processors and markets raises prices and reduces losses. The other options are not benefits.
eZine practice question (original, teacher-reviewed)
Question 5 · Factors Affecting Crop Production
Which is a beneficial biological factor in crop production?
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Answer: C. Bees pollinating crops
Pollinators such as bees increase fruit set. Stem borers, Striga and rodents are harmful.
eZine practice question (original, teacher-reviewed)
Question 6 · Crop pests
Which insect pest has piercing and sucking mouthparts?
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Answer: A. Cocoa mirid
Mirids pierce and suck sap. Grasshoppers, weevils and termites have biting and chewing mouthparts.
eZine practice question (original, teacher-reviewed)
Question 7 · Entrepreneurship in Agriculture
Which is a challenge facing agricultural entrepreneurs in Nigeria?
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Answer: A. Limited affordable credit
Credit is scarce and costly. Nigeria has a large market, roads are poor, and inputs are expensive.
eZine practice question (original, teacher-reviewed)
Question 8 · Soil formation and profile description
Which is NOT a factor of soil formation?
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Answer: A. Seed rate
Seed rate is a planting term. Parent material, climate, topography, organisms and time are the factors of soil formation.
eZine practice question (original, teacher-reviewed)
Question 9 · Importance of Agriculture
Which is an importance of agriculture to the Nigerian nation?
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Answer: B. Earning foreign exchange
Exports such as cocoa, sesame and cashew earn foreign exchange. Agriculture reduces, not causes, migration and imports, and it supplies raw materials.
eZine practice question (original, teacher-reviewed)
Question 10 · Farm machinery and implements
The device on a tractor that allows implements like a disc plough to be attached and raised or lowered hydraulically is the
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Answer: A. three-point linkage
The three-point linkage attaches and lifts mounted implements. The PTO drives powered implements, the radiator cools the engine and the gear lever changes speed.
eZine practice question (original, teacher-reviewed)
Question 11 · Maintenance of Simple Farm tools
Applying oil to the metal parts of farm tools before storing them is done to
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Answer: A. prevent rusting
Oil keeps air and moisture off metal, preventing rust. It does not add weight, blunt blades or attract insects as a purpose.
eZine practice question (original, teacher-reviewed)
Question 12 · Actors and stages in Agricultural Value chain
In the rice value chain, the miller is an example of a
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Answer: C. processor
Millers transform paddy into rice, so they are processors. Producers grow paddy, consumers eat rice, input suppliers sell seed and fertilizer.
eZine practice question (original, teacher-reviewed)
Want more Agricultural Science questions, timed, with every mistake explained?
Practise free on eZine →Topics in eZine's WAEC Agricultural Science practice bank
- Agricultural Laws and Reforms (6)
- Animal reproduction (6)
- Classification of selected crops (6)
- Crop diseases (6)
- Crop pests (6)
- Fertilizer technology (6)
- Plant nutrients and nutrient cycling (6)
- Soil formation and profile description (6)
- Types, composition and properties of soil (6)
- Weed management (6)
- Anatomy and physiology of farm animals (5)
- Animal nutrition (5)
- Classification of Farm Animals (5)
- Cultivation of selected crops (5)
- Entrepreneurship in Agriculture (5)
- Factors Affecting Crop Production (5)
- Farm machinery and implements (5)
- Farm survey and planning (5)
- Forms of Farming (5)
- Importance of Agriculture (5)
- Actors and stages in Agricultural Value chain (4)
- Agricultural Agencies in Nigeria (4)
- Agricultural Development Programmes in Nigeria (4)
- Agricultural Value Chain (4)
Published questions per topic, counted 29 October 2026. eZine does not reproduce WAEC's own Agricultural Science syllabus here; check the official syllabus with your school or at the WAEC website.