2020/2021 WAEC/NECO Answers: waec gce 2021 Agricultural Science 3 (Alternative to Practical Work)

AGRICULTURAL-PRACTICAL
(3a)
A cotton crop

(3b)
(i)leaf
(ii)cotton fruit/wool
(iii)stock

(3ci)
(i)boll weevil
(ii)the pink bollworm.

(3cii)
(i)by lacewing control
(ii)by geocoris control

(3di)
Harvested by picker

(3dii)
(i) Drying and separation
(ii) Ginning and bailing

(3e)
(i) It is used for treatment of wounds
(ii) It is used for filteration in the laboratory
(iii) For curing Puss in the Ears
(iv) Protect the garden from rabbits
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(2ai)
(i)seed box/seed tray
(ii)axe
(iii)silo

(2aii)
(i)it is used for storing seed during drying
(ii)it is use for drying holes and making out seeds beds
(iii)it is used for the storage of vegetable and perishable crops

(2aiii)
It provides a oration of storage crops

(2b)
(i)apply oil and grease on the metal side
(ii) wash after use
(iii)wash or avoid drying of the tools under the sun.

(2c)
(i)farm stead
(ii)farm hut/building

(2d)
(i)To prevent food spoilage
(ii)To prevent food shortage
(iii)Accessibility and availability of road
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(1a)
Sprinkler irrigation

(1b)
(i)sprinkler
(ii)horse pipe
(iii) fine spray

(1c)
Horse pipe

(1d)
(i)it regulate the amount of water
(ii)there is economy in the use of water
(iii)it is suitable for desert area.
(iv)it is the best for a farm with undulating landscape

(1e)
(i) High operating cost.
(ii) Water will drift when there is a lot of wind.
(iii) A stable water supply is needed.
(iv) Saline water may cause problem.

(1f)
(i) Lowering of the water table
(ii) Decreased water quality
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(4a)
(i) Crop
(ii) Proventriculus
(iii) Gizzard
(iv) Pancreas
(v) Caecum
(vi) Gall bladder

(4b)
(iii) To grid the food
(iv) Secrete engine for digestion
(v) To allow undigested food to come out
(vi) To store bile

(4c)
(i) fowl
(ii) duck
(iii) Rabbit
(iv) Pigs

(4d)
(i)Influenza A
(ii)Bird flu
(iii)Brucellosis
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Completed!.

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