eZine · Nigerian exams
JAMB Agricultural Science: practice questions.
12 free questions with answers and explanations, plus the topics to revise.
Below are free JAMB Agricultural Science practice questions with answers and explanations. They are original eZine questions, written and reviewed by teachers in the style of the JAMB UTME; we do not publish past questions. eZine's published JAMB Agricultural Science bank holds 233 questions across 45 topics (counted 29 October 2026); the largest topics are Crop husbandry, Agricultural genetics, Animal health.
In the UTME, each subject other than Use of English has 40 questions official; the full sitting is 180 questions in 120 minutes. Source: https://www.jamb.gov.ng/ · last checked 29 October 2026
JAMB 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 · Reproduction in farm animals
In the hen's oviduct, the shell is deposited mainly in the
Show answer and explanation
Answer: D. uterus (shell gland)
The shell is laid down in the uterus over about 20 hours. Fertilisation occurs in the infundibulum, albumen is added in the magnum, and shell membranes form in the isthmus.
eZine practice question (original, teacher-reviewed)
Question 2 · History of agricultural development in West Africa
The research institute in Nigeria with the national mandate for oil palm is
Show answer and explanation
Answer: C. NIFOR, near Benin City
The Nigerian Institute for Oil Palm Research (NIFOR) is near Benin City. CRIN works on cocoa, NRCRI on root crops such as yam and cassava, and LCRI on crops of the Lake Chad basin such as wheat and millet.
eZine practice question (original, teacher-reviewed)
Question 3 · Introduction to agricultural research and statistics
In an experiment to test the effect of poultry manure on okra yield, the plots that receive NO manure are the
Show answer and explanation
Answer: B. control
The control receives no treatment and serves as comparison. The treatment is the manure, the hypothesis is the statement tested, and replicates are repeats.
eZine practice question (original, teacher-reviewed)
Question 4 · Animal nutrition
A maintenance ration is fed to an animal in order to
Show answer and explanation
Answer: D. keep weight and vital functions steady
A maintenance ration keeps the animal alive and steady. Milk, fattening and pregnancy need production rations.
eZine practice question (original, teacher-reviewed)
Question 5 · Forest management (silviculture)
Which is a non-timber forest product?
Show answer and explanation
Answer: A. Honey
Honey is a non-timber product. Planks, pulpwood and poles are all wood products.
eZine practice question (original, teacher-reviewed)
Question 6 · Cropping systems, planting patterns and plant densities
Groundnut is sown at 60 cm × 20 cm with two seeds per hole on 1 hectare. If 90% of the seeds establish, how many plants are expected?
Show answer and explanation
Answer: A. 150,000
Holes = 10 000 ÷ (0.6 × 0.2) = 83,333. Seeds = 2 × holes = 166,667. Established plants = 90% of seeds = 150,000. The other figures omit the 90%, the two seeds per hole, or both.
eZine practice question (original, teacher-reviewed)
Question 7 · Plant propagation methods
Maize is to be planted at 75 cm × 25 cm, one seed per hole, on 1 ha. The seed has 85% germination and 1000 seeds weigh 300 g. What is the seed rate (to the nearest kg/ha) needed to give the full stand?
Show answer and explanation
Answer: D. 19 kg/ha
Plant population = 10 000 m² ÷ (0.75 × 0.25 m²) = 53,333 plants. Seeds needed = population ÷ 0.85 = 62,745. Mass = seeds × 0.3 g = 18.82 kg ≈ 19 kg/ha. 16 kg ignores germination, the doubled figure assumes two seeds per hole, and multiplying by 0.85 reduces instead of increasing the seed.
eZine practice question (original, teacher-reviewed)
Question 8 · Agricultural genetics
Which is TRUE of meiosis but NOT of mitosis?
Show answer and explanation
Answer: B. It gives four haploid daughter cells
Meiosis gives four haploid cells for gametes. Root-tip growth, two identical cells and keeping the diploid number are all features of mitosis.
eZine practice question (original, teacher-reviewed)
Question 9 · Simple farm tools
Which tool is used to dig up stumps and break hard ground?
Show answer and explanation
Answer: C. Mattock (pick-axe)
A mattock digs hard soil and stumps. Watering cans, sickles and rakes cannot.
eZine practice question (original, teacher-reviewed)
Question 10 · Application of ICT in agriculture
A farmer in Kebbi receives an SMS telling him that fertilizer is ready for collection at a subsidised price. This is an example of using ICT for
Show answer and explanation
Answer: D. input distribution
The SMS supports input (fertilizer) distribution, as in e-wallet schemes. It is not a forecast, diagnosis or simulation.
eZine practice question (original, teacher-reviewed)
Question 11 · Crop pests
Which is a store pest of maize grains?
Show answer and explanation
Answer: C. Sitophilus zeamais (maize weevil)
The maize weevil attacks stored grains. Zonocerus is a field grasshopper, Busseola a field stem borer, and Sahlbergella a cocoa mirid.
eZine practice question (original, teacher-reviewed)
Question 12 · Factors of agricultural production
Under communal land ownership in Nigeria, land belongs to
Show answer and explanation
Answer: B. the community, whose members have use rights
Communal land is held by the community or family for members. Freehold gives an individual the right to sell, the Land Use Act vests land in state governors, and foreign companies do not own communal land.
eZine practice question (original, teacher-reviewed)
Want more Agricultural Science questions, timed, with every mistake explained?
Practise free on eZine →Agricultural Science syllabus topics official
- Meaning and scope of agriculture
- Importance of agriculture
- Agricultural ecology
- Agricultural genetics
- Farm inputs
- History of agricultural development in West Africa
- Roles of government and NGOs in agricultural development
- Rocks and soil formation
- Soil water and soil conservation
- Soil fertility
- Land preparation and soil tillage
- Plant forms and functions
- Growth, development and reproduction
- Plant propagation methods
- Cropping systems, planting patterns and plant densities
- Crop husbandry
- Pasture and forage crops
- Floriculture
- Weeds
- Crop diseases
- Crop pests
- Forest management (silviculture)
- Forms and classification of major farm animals in West Africa
- General terminologies in animal production
- Anatomy and physiology of farm animals
- Reproduction in farm animals
- Animal nutrition
- Livestock management
- Animal health
- Fisheries and wildlife
- Bee-keeping (apiculture)
- Factors of agricultural production
- Basic economic principles
- Labour management
- Farm management
- Marketing of agricultural produce
- Agricultural extension
- Farm surveying and farmstead planning
- Simple farm tools
- Farm machinery and implements
- Mechanization and sources of farm power
- Processing and storage
- Introduction to biotechnology
- Application of ICT in agriculture
- Introduction to agricultural research and statistics
45 topics. Summarised from JAMB's published syllabus; verified 2026-10-24.
Source: https://ibass.jamb.gov.ng/static/media/AgricPdf.9465f3cd595e9542868a.pdf · last checked 29 October 2026See the full Agricultural Science syllabus with subtopics and objectives →