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2026 WAEC Agricultural Science Practical Questions and Answers
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2026 WAEC Agricultural Science Practical Answers
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QUESTIONS
ANSWERS
AGRICULTURAL SCIENCE-PRACTICAL ANSWERS
(1ai)
A – Platy
B – Blocky
C – Granular
D – Prismatic
A – Platy
B – Blocky
C – Granular
D – Prismatic
(1aii)
(PICK ANY TWO)
(i) Add organic matter (eg, compost or manure) to enhance soil aggregation and fertility.
(ii) Practice conservation tillage to avoid soil compaction and maintain structure.
(iii) Introduce cover crops to reduce erosion and improve soil health.
(iv) Apply gypsum to improve the structure of clay soils by breaking down compacted layers.
(PICK ANY TWO)
(i) Add organic matter (eg, compost or manure) to enhance soil aggregation and fertility.
(ii) Practice conservation tillage to avoid soil compaction and maintain structure.
(iii) Introduce cover crops to reduce erosion and improve soil health.
(iv) Apply gypsum to improve the structure of clay soils by breaking down compacted layers.
(1aiii)
(PICK ANY TWO)
(i) Enhances water infiltration and retention, ensuring sufficient water for plant roots.
(ii) Improves aeration, enabling root respiration and nutrient uptake.
(iii) Reduces soil erosion by holding soil particles together.
(iv) Facilitates root penetration, allowing plants to access deeper nutrients and water.
(PICK ANY TWO)
(i) Enhances water infiltration and retention, ensuring sufficient water for plant roots.
(ii) Improves aeration, enabling root respiration and nutrient uptake.
(iii) Reduces soil erosion by holding soil particles together.
(iv) Facilitates root penetration, allowing plants to access deeper nutrients and water.
(1b)
Earthworm
Earthworm
(1bi)
(PICK ANY THREE)
(i) Soil pH (earthworms thrive in neutral to slightly alkaline soils).
(ii) Moisture levels (they require moist soil for survival).
(iii) Organic matter availability (as food source).
(iv) Soil temperature (extreme heat or cold can reduce their population).
(v) Use of chemical fertilizers or pesticides (can harm or kill earthworms).(1biii)
(PICK ANY THREE)
(i) Enhances soil aeration through burrowing.
(ii) Increases soil fertility by breaking down organic matter into humus.
(iii) Improves water infiltration by creating tunnels in the soil.
(iv) Promotes nutrient cycling by digesting and excreting organic materials.
(v) Reduces soil compaction, creating better conditions for root growth.
(PICK ANY THREE)
(i) Soil pH (earthworms thrive in neutral to slightly alkaline soils).
(ii) Moisture levels (they require moist soil for survival).
(iii) Organic matter availability (as food source).
(iv) Soil temperature (extreme heat or cold can reduce their population).
(v) Use of chemical fertilizers or pesticides (can harm or kill earthworms).(1biii)
(PICK ANY THREE)
(i) Enhances soil aeration through burrowing.
(ii) Increases soil fertility by breaking down organic matter into humus.
(iii) Improves water infiltration by creating tunnels in the soil.
(iv) Promotes nutrient cycling by digesting and excreting organic materials.
(v) Reduces soil compaction, creating better conditions for root growth.
========================
(2a)
I – Secateurs
II – Hedge shears
III – Sickle
(2b)
I – Secateurs
(PICK ANY TWO)
(i) Pruning small branches or twigs from trees and shrubs.
(ii) Harvesting fruits and flowers.
(iii) Removing dead or diseased parts of plants.
(iv) Shaping ornamental plants and shrubs.
III – Sickle
(PICK ANY TWO)
(i) Cutting grass and weeds for livestock feed.
(ii) Harvesting cereal crops like wheat and rice.
(iii) Clearing undergrowth in preparation for planting.
(iv) Harvesting green fodder for livestock.
(2c)
(PICK ANY TWO)
(i) Secateurs are smaller and hand-held, while hedge shears are larger and require two hands to operate.
(ii) Secateurs are used for precise cutting of small branches, whereas hedge shears are used for trimming larger hedges and bushes.
(iii) Secateurs have short, curved blades for precision, while hedge shears have long, straight blades for trimming wide areas.
(iv) Secateurs are designed for cutting thin branches, while hedge shears are more suitable for thicker hedges or shrubs.
(2d)
(i) Mower
(ii) Combined harvester
(2e)
(PICK ANY FOUR)
(i) Clean tools after use to remove dirt and plant residues.
(ii) Sharpen blades regularly to maintain cutting efficiency.
(iii) Oil moving parts to prevent rust and ensure smooth operation.
(iv) Store tools in a dry place to avoid rust and damage.
(v) Inspect tools frequently for any damage and repair or replace worn-out parts.
(vi) Use tools for their intended purpose to prevent unnecessary wear and breakage.
=========================
(3a)
Spec A; grasshopper
Spec B: termite
Spec C: weevil
(3b)
Spec; B Termites typically have chewing mouthparts, adapted for consuming wood and plant material.
Spec; C Weevils have chewing mouthparts, which they use to bore into grains and seeds.
(3c)
Spec; A
(i)maize
(ii)wheat.
Spec; B
(i)sugarcane
(ii)maize.
(3di)
Termites can cause extensive damage to crops and wooden structures. This can lead to increased costs for farmers due to crop loss and the need for pest management and control measures.
(3dii)
Treat wood with termiticides or use termite-resistant materials like steel, concrete, or plastic for building poultry pens.
(3e)
(i)Proper Cleaning and Sanitation
(ii)Airtight Storage
(iii)Insecticides
(iv)Fumigation
=========================
(4a)
A – Natural Brooding
B – Artificial Brooding
(4b)
I – Reflector
II – Electric bulb
III – Brooder box
(4c)
(PICK FOUR ONLY)
(i) Ensure proper ventilation in the brooding area to prevent overheating and maintain air quality.
(ii) Position the reflector and electric bulb at an appropriate height to provide sufficient heat for the chicks.
(iii) Regularly check and adjust the temperature inside the brooder box to ensure it remains within the optimal range for the chicks.
(iv) Monitor the humidity levels in the brooding area to create a comfortable environment for the chicks.
(v) Clean the brooder box regularly to maintain hygiene and prevent the spread of diseases.
(vi) Provide fresh food and water for the chicks on a regular basis to support their growth and development.
(vii) Monitor the behavior and health of the chicks closely to detect any signs of illness or distress early on.
(4d)
(PICK THREE ONLY)
(i) Rodents
(ii) Snakes
(iii) Lizards
(iv) Birds
(v) Raccoons
(vi) Squirrels
(4e)
(PICK THREE ONLY)
(i) Increased risk of diseases and infections due to lack of controlled environment and biosecurity measures
(ii) Inability to monitor individual bird health and growth effectively
(iii) Higher likelihood of predator attacks on chicks
(iv) Limited control over environmental factors such as temperature and humidity
(v) Greater susceptibility to adverse weather conditions
(vi) Difficulty in providing proper nutrition and access to clean water.
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