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Table of Contents

NECO Agric Science Practical Studies 2023 answers

Agricultural Science (Practical)
10:00am – 11:30am

(1a)
Specimen A – Watering can
Specimen B – Plier
Specimen C – Knapsack sprayer.

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(1b)
(PICK ANY ONE)
(i) Specimen A is specifically designed for manual watering of plants, whereas the Specimen C 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 C 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 C is more versatile and commonly used in larger agricultural fields or orchards for spraying operations.

(1c)
Specimen A:
(PICK ANY TWO)
(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:
(PICK ANY TWO)
(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.

(1d)
(PICK ANY FOUR)
(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.

(1e)
(PICK ANY TWO)
(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

(2a)
Specimen D – Litmus paper
Specimen E – Cow Dung
Specimen F – Limestone
Specimen G – Clayey Soil

(2b)
(i) Collection of a small sample of clayey soil
(ii) Preparation of a soil-water slurry

(2c)
(PICK ANY THREE)
(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

(2d)
(PICK ANY THREE)
(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

(2e)
(PICK ANY THREE)
(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

(3a)
Specimen H – Yam Tuber
Specimen I – Cassava Tuber
Specimen J – Orange fruit

(3b)
Yam Sett

(3c)
Use of Barn

(3d)
(PICK ANY TWO)
(i) Root Knot Nematodes
(ii) Cassava Root Rot
(iii) Cassava Mosaic Disease

(3e)
(PICK ANY TWO)
(i) Garri
(ii) Cassava flour
(iii) Cassava chips
(iv) Cassava animal feed
(v) Cassava flakes

(3f)
(i) Potato
(ii) Sweet potatoes

(3g)
(PICK ANY TWO)
(i) Mulching
(ii) Weed control
(iii) Staking
(iv) Fertilizer application
(v) Pest and disease management

(3h)
(PICK ANY TWO)
(i) Thrips
(ii) Red Mites
(iii) Citrus whitefly
(iv) Citrus nematode
(v) Citrus aphids

(4a)
Specimen K – Groundnut cake
Specimen L – Hides and skin
Specimen M – Digestive tract of a bird.

(4b)
(PICK ANY TWO)
(i) Curing
(ii) Soaking
(iii) Fleshing
(iv) Tanning

(4c)
(PICK ANY THREE)
(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.

(4d)
PCK ANY FOUR)
(i) Esophagus
(ii) Crop
(iii) Proventriculus
(iv) Gizzard
(v) Intestines

(4e)
(PICK ANY ONE)
-Avian Influenza (Bird Flu)
-Newcastle Disease
-Infectious Bursal Disease (Gumboro Disease)

(4f)
(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.

COMPLETED – GOODLUCK

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AGRIC. SCIENCE PRACTICAL SPECIMEN

Specimen A – WATERING CAN
Specimen B – PLIER
Specimen C – KNAPSACK SPRAYER
Specimen D – LITMUS PAPER
Specimen E – COW DUNG
Specimen F – LIMESTONE
Specimen G – CLAYEY SOIL (POWDERY FORM)
Specimen H – YAM TUBER
Specimen I – CASSAVA TUBER
Specimen J – ORANGE FRUIT
Specimen K – GROUNDNUT CAKE
Specimen L – HIDES AND SKIN
Specimen M – DIGESTIVE TRACT OF A BIRD