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WAEC 2019 AGRICULTURAL SCIENCE OBJ AND ESSAY VERIFIED ANSWER

 

AGRIC OBJ:
1-10: BDBCABCCDB
11-20: BBACADCACB
21-30: BBADBDDADB
31-40: BBCBCADCDA
41-50: DADCCCBDBA

(2a)
TABULATE
– WEED-
* Goat
* Siam weed
* Water leaf
-BOTANICAL NAME –
* Agaratum conizoids
* Chiomolaena odorata
* Talinum triangulare
– METHOD OF DISPOSAL-
* Animal
* Wind
* 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
============================================
(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.
===========================================
(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
(6bi)
Demand shedule:
the demand schedule is a table showing the quantity demanded of a good or service at different price levels.
(6bii)
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
==============================
(4a)
Spacing; is the distance between the plant stands in order to allow proper ventilation within plant farm. While
Thinning; this is refer to as the removal of excess plant or weak plants to allow the healthy one to germinate.
(4bi)
Elaeis guineensis
(4bii)
(i)Pisifera
(ii) Tenera
(4biii)
seed and are germinated prior to planting by moistening them and and placing them in a small box within a polyethylene bag placed in a germinator.
(4biv)
deep soil and stable high temperatures (30–32°C/86–89.6°F for at least 80 days) for optimum productivity.
(4bv)
9m * 9m
(4bvi)
(i)blast disease
(ii)freckle disease
(4c)
(i)They serve as source of raw materials to the industries for both rural and urban centers in West Africa.
(ii) they also provide employment opportunities to thousand of people.
(iii)provide employment opportunities to thousand of people.
(iv)provide food, medicine, energy, shelter and recreational facilities for people in both rural and urban centers in West Africa.
(v)Forest serves as a buffer in natural disasters like flood and rainfalls
(vii) Protecting watersheds and reducing or slowing the amount of erosion and chemicals that reach waterways
(4d)
Apiculture is rearing and management of honeybees for commercial production of honey.
=====================
(5aiii)
Culling; is the separation of animals from a herd because of age, barrenness, incurable illness, or serious physical defect.
(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
(5ci)
-for measuring angular distance
-for making angles
(5cii)
-for measuring distance
-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.

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Posted by on May 23, 2019.

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