2018 WAEC AGRICULTURAL SCIENCE THEORY AND OBJECTIVE ANSWER / EXPO


AGRIC OBJ:
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1-10: ACCADBDDBB
11-20: DDAABACBBA
21-30: CDCCADDDBA
31-40: BDDAACDDCD
41-50: CCBACBBBCC




AGRICULTURAL SCIENCE THEORY ANSWER
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(1ai)
Basic Ammenities:
-It makes able bodied me to migrate from rural to urban areas in search of job
-Poor processing facilities for farm produce
-Shortage of water for irrigation purposes for all season cropping
-Poor health services reduces the productivity of farmers
.
(1aii)
Farm inputs:
-Available farm inputs are of inferior quality,outdate
d and crude
-Farm inputs like chemicals,fertilizers,tools and implements are grossly inadequate
-Modern farm inputs are not produced in Nigeria
-Farm inputs are expensive to buy and maintain
.
(1bi)
Tractor:
-Used for drawing farm implements like plough,harrows,ridgers etc
-It has hydraulic control system which aids the lifting of coupled implements
-It can be used to carry harvested crops or other farm products from the farm to the market
.
(1bii)
Buldozzer:
-For bush clearing
-For felling trees and stumps
-For levelling ground
.
(1c)
-Service at regular interval
-Replace worn out or weld broken parts
-Adhere strictly to manual or manufacturer's instruction
-Routine and regular changing of oil

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4a)
Land tenure can be defined as the manner in which a party holds or occupies an area of land.
.
4b)
A weed may be defined as any plant or vegetation that interferes with the objectives of farming or forestry, such as growing crops, grazing animals or cultivating forest plantations.
.
4C)
i)Rootknot nematode/Meloidogyne spp.

ii)
-Nematodes are soil borne so are transmitted through soil movement and run-off water
-Through vegetative planting materials/transplanting of seedling
-Through contaminated farm tools and equipment
.
iii)
-Enlargement of certain cells of the
-roots in the form of knots
.
iv)
-Crop rotation
-Use resistant varieties

4d)
i.
-Primary Factor of Production
-Free Gift of Nature
-Immobility
-Passive Factor of Production
.
ii.
-Man produces Capital
-Capital is a passive factor of production
-Capital is a produced means of production
-Capital Depreciates

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5b)
(i) Calcium
(ii) Potassium

(5c)
(i) They help in enegry production
(ii) They enhances healthy bone and teeth
(iii) They help in nerve and muscle function
(iv) They provide strong immune for the body

(5di)
Inflammation of the teat

(5dii)
- Use of germicides
- Removal of causative agents

(5div)
Rinder pest

(5dv)
Immunization by vaccine combined with
quarantine

(5dvi)
Use strict biosecurity measures for animals,
animal
products.

(5dvii)
Unusually watery faeces that are yellowish-
green in colour
(5dviii)
Use of vaccination
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(6a)
i.By washing of the feeders and drinkers regularly
ii.Admistration
of vaccine and medication to birds
iii.Fumigation and proper sanitation should be done before arrival of the bird
iv.Provision of medication and vaccination

(6b)
-It prevents secondary infection caused by horn injuries
-It creates more space for animals
-It prevents injuries to the body of other animals
-It makes it safer during vaccination or deworming of animals

(6c)
- harvesting
- packaging and packing
- transport
- advertising
- food processing

(6d)
-Inadequate for land tenure system
-inadequate finance and credit facilities
-poor marketing system
-inadequate farm input


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