WAEC 2019 Agricultural Science Answer Now Available

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AGRIC OBJ
01-10 BBBCCBCCDB
11-20 BBACADCACB
21-30 BBADCDDADB
31-40 BDCBABCDDD
41-50 AABCDBCCDA

1a) Tabulate Communal land ownership system
i) Owned by group of people, community.
ii) Co-operative forming is possible.
iii) Permanent crops are not planted.

Individual land ownership system
i) Owned by individual.
ii) Individual farming is possible.
iii) Permanent crops are planted as it is owned by one person

1b)
i) Soil science
ii) Crop science
iii) Agricultural engineering
iv) Animal science
v) Agronomy
vi) Horticulture

(2a)

Goat weed | Ageratum conyzoides | Animal

Siam weed | Chromolaena odorata | Wind

Water leaf | Talinum Triangulare | Animal

(2bi)
Physical factor
– Erosion
– Slope
– Temperature

(2bii)
Economical factors
– Insufficient fund to acquire land
– Land tenure system
– Land use and reformation

(2c)
– It leads to unpleasant odours
– It renders pond water undrinkable
– It leads to suffocation of aquatic animals such as fish
– It leads to eutrophication

(2d)
– Sewage should be properly treated before discharge into pond
– Avoid indiscriminate sewage disposal on water body
– Sanction should be placed on use of chemical for fishing
– There should be regulations in the use of chemical fertilizer on the farm

(3a)

Tabulate:

CROPS | Classification base of life Cycle

UNDER CROPS:
Mangos
Rice
Groundnut
Pepper
Suyar beans
Oil palm
Yam
Tomatoes
Rubber
Gmjas
Cocoa
Cowpea
Carrot

UNDER CLASSIFICATION OF LIFE CYCLE
Perineum
Annual
Annual
Annual
Annual
Perineum
Annual
Ephemeras
Annual
Perineum
Annual
Biennia

(3b)
Tabulate:
Soil Component | Percentage volume
(1) soil water 25%
(2) Organic matter 50%
(3)Inorganic mater 45%
(4) Soil air 25%

(3c)
(i) Ring method
(ii) Foliar method
(iii) Brocasting method
(iv) Row Application
(v) Band Placement

(4a)
Spacing is the distance between the plant stands in order to allow proper ventilation within plant farm

while

Thinning refers to as the removal of excess plants or weak plants to allow the healthy one to germinate

(4bi)
Elaeis guineensis

(4bii)
(Pick two)
(i)Dura
(ii)pisifera
(iii)Tenera

(4biii)
By seeds

(4biv)
Deep loamy soil rich in organic matter

(4v)
9m × 9m

(4vi)
(Pick two)
(i)Anthracnose disease
(ii)Freckle disease
(iii)Blast disease
(iv)Galadima disease

(5ai)
Flushing is a management term for providing high quality feeds, usually grains prior to the start of the breeding to increase reproductive performance.

(5aii)
Castration is defined as the destruction or removal of the testes, epididymis, and a part of spermatic cord from a male animal e.g. ram, buck, bull.

5bi
-it increase animal resistance to disease
-it improve the animals yield

5bii
-it increase the strength of animalals
-it weakness the size and weight of animals

5biii
-it prevent spread of disease
-it reduces lost of productions

5c
i
-for measuring angular distances
-for making angles

ii
-for measuring distances
-for measuring size of land.

5d.
Floriculture is the Branch of agriculture which deals with production of ornamental plants like flowers while agriculture deals with production of fish and other aquatic animals.

6ai)
Useful life of the tractor
=2009-2000
= 9years

(6aii)
Salvage value = D3000.00

(6aiii)
Total depreciation = cost price – salvage value
= (12000-3000)
= D9000.00

(6aiv)
Annual depreciation = Total depreciation /useful life
= 9000/9
= D1000.00

6b)
i) Demand shedule:
the demand schedule is a table showing the quantity demanded of a good or service at different price levels.

ii)
Supply curve:
The supply curve is a graphical representation of the correlation between the cost of a good or service and the quantity supplied for a given period.

(6c)
(i) Agricultural Development Programme (ADP)
(ii) Farm settlement scheme
(iii) Agro-service centres
(iv) Research institutes

(6d)
(i) Nitrogen fixing bacteria
(ii) Mulching
(iii) Decay organic matters
(iv) Through nitrosomonas

COMPLETED