Neco 2023 Agricultural Science Practical Question And Answer Now Available


Specimen A – Watering can
Specimen B – Plier
Specimen C – Knapsack sprayer.

(i) Specimen A is specifically designed for manual watering of plants, whereas the Specimen B is used for spraying liquids such as pesticides, fertilizers, or herbicides on plants.
(ii) Specimen A relies on gravity and manual pouring to dispense water, while the Specimen B utilizes a pump mechanism to generate pressure and spray liquids.
(iii) Specimen A is suitable for smaller-scale watering tasks, such as gardens or potted plants, while Specimen B is more versatile and commonly used in larger agricultural fields or orchards for spraying operations.

Specimen A:
(i) The watering can is used to provide controlled amounts of water to plants.
(ii) It can be used to apply liquid fertilizers to plants
(iii) The watering can with a fine rose nozzle can be used for gentle watering to start seeds or seedlings.
(iv) It can also be used for general cleaning tasks, such as rinsing gardening tools or washing outdoor surfaces.

Specimen B:
(i) Pliers are commonly used in electrical work and other applications where gripping and cutting wires are necessary.
(ii) Pliers can be used for holding and manipulating small objects or materials in various tasks.
(iii) Pliers are useful for bending or shaping wires, metal sheets, or other materials.
(iv) They can be used to grip and remove nails or staples from surfaces.

(i) Read and follow the manufacturer’s operating instructions and safety guidelines.
(ii) Use protective clothing such as gloves, goggles, and a mask to prevent direct contact with the chemicals and inhalation of spray mist.
(iii) Ensure proper ventilation during mixing.
(iv) Avoid spraying in windy conditions to prevent spray drift.
(v) Clean and maintain the knapsack sprayer regularly
(vi) Inspect and replace any damaged or worn-out parts as needed.

(i) Proper maintenance ensures that these tools remain functional and usable over an extended period
(ii) It helps ensure the tools perform their intended functions effectively and efficiently.
(iii) Maintaining the tools properly can prevent unnecessary repairs or replacements, resulting in cost savings for the farmer.
(iv) Well-maintained tools are less likely to malfunction or cause accidents


Specimen D – Litmus paper
Specimen E – Cow Dung
Specimen F – Limestone
Specimen G – Clayey Soil

(i) Collection of a small sample of clayey soil
(ii) Preparation of a soil-water slurry

(i) It releases these nutrients slowly, providing a natural source of plant nutrients.
(ii) It helps improve soil structure by enhancing its ability to retain nutrients.
(iii) it enhances microbial activity, aiding in the decomposition of organic matter and nutrient cycling
(iv) It improves the fertility of the soil
(v) It improves the crop yields of the soil
(vi) It improves the water-holding capacity of the soil

(i) It has a high water-holding capacity
(ii) Its texture is fine, powdery and smooth when dry
(iii) The particles are sticky when wet
(iv) It is poorly aerated
(v) It can be molded and retains its shape when moist

(i) It is used to raise soil pH in acidic soils
(ii) It is used to replenish calcium and magnesium in the soil for healthy plant growth.
(iii) It aids in the breakdown of organic materials and improves nutrient uptake by plant roots.
(iv) It can be used to improve soil structure
(v) It can be used in suppressing certain soil-borne diseases and pathogens


Specimen H – Yam Tuber
Specimen I – Cassava Tuber
Specimen J – Orange fruit

Yam Sett

Use of Barn

(i) Root Knot Nematodes
(ii) Cassava Root Rot
(iii) Cassava Mosaic Disease

(i) Garri
(ii) Cassava flour
(iii) Cassava chips
(iv) Cassava animal feed
(v) Cassava flakes

(i) Potato
(ii) Sweet potatoes

(i) Mulching
(ii) Weed control
(iii) Staking
(iv) Fertilizer application
(v) Pest and disease management

(i) Thrips
(ii) Red Mites
(iii) Citrus whitefly
(iv) Citrus nematode
(v) Citrus aphids


Specimen K – Groundnut cake
Specimen L – Hides and skin
Specimen M – Digestive tract of a bird.

(i) Curing
(ii) Soaking
(iii) Fleshing
(iv) Tanning

(i) Hides and skin are valuable raw materials for the leather industry
(ii) It helps farmers by increasing the value and profitability of their livestock.
(iii) Leather production can generate employment opportunities, such as tannery workers or artisans involved in leathercraft.
(iv) Exporting of processed leather products contributes to foreign exchange earnings and supporting the local economy.

(i) Esophagus
(ii) Crop
(iii) Proventriculus
(iv) Gizzard
(v) Intestines

-Avian Influenza (Bird Flu)
-Newcastle Disease
-Infectious Bursal Disease (Gumboro Disease)

(i) Specimen K is a good source of protein, which is essential for growth, development, and overall health of animals.
(ii) Specimen K provides energy through its fat and carbohydrate content, supporting the energy requirements of animals.

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