This is for UTME Candidates looking for JAMB Agricultural Science Questions and Answers 2026. Especially for those aspiring for admission into the faculty of Agriculture and other courses requiring Agric Science. Here you will get genuine Agricultural Science JAMB questions and answers for 2026. Your duty now is to read through them as many times as possible and get ready to smash your Agricultural Science paper. Remember to use the comments sections if you have questions, and don’t forget to join our Free Online Tutorial Classes on YouTube. (Subscribe to the Channel)
Table of Contents
JAMB Agricultural Science Questions and Answers 2026
The following JAMB Agricultural Science Questions and Answers 2026 are the questions you should expect in your Agricultural Science paper in 2026 UTME, together with their answers. You can click on the answer keys to get explanations
UTME Agricultural Science Examination 2026
Instructions: Select the correct option for each question. Click the button below each question to reveal the answer and explanation.
1. The branch of agriculture that deals with the production of fruits and vegetables is known as
Explanation: Horticulture focuses on the cultivation of fruits, vegetables, flowers, and ornamental plants. Tip: Distinguish from agronomy (field crops) and silviculture (forest trees).
2. Which of the following is a biotic factor affecting agricultural production?
Explanation: Biotic factors are living organisms like pests, diseases, and weeds that impact crops and livestock. Tip: Abiotic factors include climate and soil properties.
3. According to Mendel’s first law, alleles separate during
Explanation: The law of segregation occurs during meiosis I when homologous chromosomes separate. Tip: Leads to genetic variation in offspring.
4. The primary function of agrochemicals in agriculture is to
Explanation: Agrochemicals like pesticides and herbicides manage biotic stresses. Tip: Overuse can lead to resistance and environmental pollution.
5. The main challenge of shifting cultivation in West Africa is
Explanation: Continuous clearing leads to loss of topsoil and reduced fertility. Tip: Bush fallowing is a modified version to restore soil.
6. The Land Use Act of 1978 in Nigeria primarily aims to
Explanation: It vests land in state governors for equitable distribution. Tip: Addresses fragmentation and tenure insecurity.
7. NGOs contribute to agricultural development mainly through
Explanation: They provide training, seeds, and microfinance to smallholders. Tip: Examples include FAO and IFAD projects.
8. The process of rock weathering that involves chemical change is
Explanation: Hydration adds water molecules, altering mineral structure. Tip: Physical weathering like abrasion is mechanical.
9. Soil texture refers to the
Explanation: Determines soil type (e.g., loamy, sandy). Tip: Use soil triangle for classification.
10. The main cause of soil erosion in agricultural lands is
Explanation: Bare soil exposes particles to wind and water. Tip: Contour plowing and terracing prevent it.
11. Capillary water in soil is available to plants because it is held by
Explanation: It moves upward against gravity in soil pores. Tip: Hygroscopic water is unavailable, bound tightly to particles.
12. Leaching in soils is most severe in
Explanation: Sandy soils have large pores allowing rapid water percolation. Tip: Leads to nutrient loss; lime application helps.
13. A macronutrient essential for chlorophyll formation is
Explanation: Magnesium is the central atom in chlorophyll. Tip: Deficiency causes interveinal chlorosis.
14. The nitrogen cycle involves all except
Explanation: Nitrogen cycle recycles N; photosynthesis is for carbon. Tip: Rhizobium bacteria fix atmospheric N.
15. Zero tillage is advantageous because it
Explanation: Maintains crop residue cover to protect soil. Tip: Also conserves moisture and reduces costs.
16. The function of the root in a dicot plant is primarily
Explanation: Roots anchor the plant and absorb water/nutrients. Tip: Taproot in dicots vs. fibrous in monocots.
17. Double fertilization in flowering plants results in the formation of
Explanation: One sperm fertilizes egg (embryo), another fuses with polar nuclei (endosperm). Tip: Unique to angiosperms.
18. Seed dormancy can be broken by
Explanation: Scarification abrades seed coat to allow water entry. Tip: Stratification for cold dormancy.
19. Grafting is commonly used for propagation in
Explanation: Combines scion and rootstock for desirable traits. Tip: Ensures compatibility between vascular tissues.
20. The recommended seed rate for maize in West Africa is approximately
Explanation: For 75,000 plants/ha at 25 cm spacing. Tip: Adjust for variety and conditions.
21. Mixed cropping is practiced to
Explanation: Diversifies risks and optimizes resources. Tip: Companion planting e.g., maize-soybean.
22. The economic importance of cassava in Nigeria includes
Explanation: Used for garri, fufu, and ethanol. Tip: Susceptible to mosaic virus.
23. Rotational cropping helps in
Explanation: Legumes fix nitrogen for subsequent crops. Tip: Example: maize-cowpea rotation.
24. The major pest of stored maize is the
Explanation: Sitophilus zeamais bores into grains. Tip: Fumigation with phosphine gas controls it.
25. Taungya system is a form of
Explanation: Intercrops food crops with trees for soil improvement. Tip: Used in reforestation.
26. The White Fulani is a breed of
Explanation: Bos indicus type, adapted to humid tropics. Tip: Known for milk and traction.
27. Ruminants differ from non-ruminants in having
Explanation: Rumen, reticulum, omasum, abomasum for cellulose digestion. Tip: Microbial fermentation produces VFAs.
28. The nutrient required for bone formation in livestock is
Explanation: With phosphorus in 2:1 ratio. Tip: Deficiency causes rickets or osteomalacia.
29. Artificial insemination in cattle improves
Explanation: Uses superior semen from selected sires. Tip: Reduces inbreeding.
30. The gestation period of a sow is approximately
Explanation: Rule of 3 months, 3 weeks, 3 days. Tip: Compare to cow (280 days).
31. The opportunity cost in farm production refers to
Explanation: Value of next best use of resources. Tip: Key in decision-making for resource allocation.
32. Farm records help in
Explanation: Track income, expenses, and performance. Tip: Types: inventory, cash flow.
33. Marketing of agricultural produce is challenged by
Explanation: Bad roads increase post-harvest losses; price fluctuations affect income. Tip: Cooperatives stabilize markets.
34. Extension services primarily aim to
Explanation: Bridge research and practice via training. Tip: Uses demonstration plots.
35. The law of diminishing returns states that
Explanation: After optimal point, marginal product declines. Tip: Guides fertilizer application.
36. A simple farm tool for weeding is the
Explanation: Manually cuts weeds around plants. Tip: More efficient than hand pulling.
37. Fermentation in crop processing is used for
Explanation: Removes cyanide and improves taste. Tip: Anaerobic microbial action.
38. The main advantage of using tractors in farming is
Explanation: Covers large areas quickly. Tip: Requires skilled operators and maintenance.
39. Preservation of fish by smoking prevents
Explanation: Dehydrates and adds antimicrobial compounds. Tip: Common in West Africa for tilapia.
40. The introduction method of crop improvement involves
Explanation: Testing adaptability in new environment. Tip: Quarantine prevents disease introduction.
Read Also: 20 Most Repeated Topics in JAMB Agricultural Science Exams 2026
Conclusion
So here you have the 40 Agricultural Science Questions you can expect to see in your 2026 JAMB examination. Read them again and again. Ensure that you get very familiar with each of them to the extent that you can readily recognize them any time. JAMB is a very serious examination and a lot depend on it. You will answer 40 questions in JAMB Agricultural Science 2026 within 26 minutes. So it’s important that you pay attention to the information revealed on this page.
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