Waec 2017 Agric Science Obj And Theory Answers – May/June Expo

AGRIC OBJ:
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NOTE: 1,2,3,4,5,6 ANSWERS ADDED…

DONT DULL

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AGRIC SCIENCE ANSWERS

3a)
drawing
3b)
i)Poor plant growth
ii)Leaves of plants turns reddish
iii)Poor root development results in logging
3c)
i)Weevil….. Burrowing
ii)Locust …… Biting and chewing
iii)Cotton staine…. Piercing and sucking
iv)Army worm…. Biting and chewing
v)Scale insects… Piercing and sucking
vi)Green spider mite….. Piercings and
sucking
vii)Capside….. Piercings and sucking

viii)Yam beetle ….. Burrowing insects

4ai)
Causal organism:Fungus(Ustilago maydis)
4aii)
Mode of transmission:Spread by wind
4aiii)
Symptoms:
i)Galls on the ears
ii)The leaves turns black
iii)galls on the leaves and tassels
4aiv)
Cultural control:
i)destroy the diseased plant
ii)Use resistant varieties
iii)Treat seeds before planting
4b)
i)Taungya system
ii)Afforestation
iii)Regeneration
iv)Selective exploration
v)Forest regulation
vi)Deforestation
4ci)
i)egg producers
ii)Meat and egg producers
iii)Meat producers
iv)Game birds
4cii)
i)Egg producers:Turkey,chicken
ii)Meat and egg producers:Chicken turkey
iii)Meat producers:Chicken,Goat

iv)Game birds:Fowls

(5a)
Anthrax:
(i)-Bacillus anthracis
(ii)-Via respiration ie air borne
(iii)-Small blisters on skin,vomiting,diarrhea
(iv)
-Use of antibiotics
-Killing and burrying of infected animals
(5bi)
-Fish meals
-Blood meal
-Soya bean cake Groundnut cake
(5bii)
-Field peas
-Alfalfa
(5c)
-It is mobile
-It is perishable
-Its supply is inelastic
-Its reward is wage and salary

-It is a physical and mental effort on man

1a)
(i). West African Rice Development Agency (WARDA)
(ii) International Livestock Centre for Africa (ILCA)
(iii) International Crop Research Institute for Semi-Arid
Tropics (ICRISAT)
(iv) International Livestock Research Institute (ILRI)
(v). Food and Agriculture Organization
1b)
i)Agriculture regularly supplies raw materials like
sugarcane , jute
cotton, oilseeds, tea, spices, wheat; paddy etc.
ii)Agriculture through Farmer-households used to save
their money in the bank and other financial institutions
which
ultimately is used by the industry owners in the form of
investment.
iii)Industry regularly supplies scientific
tools and equipment’s like tractors, harvesters, pump-
sets chemical fertilizers etc. to agriculture increase the
per hectare production. Real
iv)Industry increase the market for finished agricultural
goods some infrastructural development like
roads, railway, storage etc.
1ci.
The disc plough is designed to work in all types of soil for
functions such as soil breaking, soil raising, soil turning
and soil mixing. • It is used to open the new fields and to
process the stony areas.
1c)ii Beam: A heavy iron lever having an oscillating
motion on a central axis, one end of which is connected
with the piston rod from which it receives motion, and the
other with the crank of the wheel shaft.
1ciii.
Designed to distribute the weight of its load between the
wheel and the operator so enabling the convenient
carriage of heavier and bulkier loads than would be
possible were the weight carried entirely by the operator.
1d)
I)power output is very low.
ii)it cannot performe certain period of the day eg raining
or sunny weather
iii)diseases may affect the efficiency of the working
animal.
iv)the use of animal is restricted to certain climatic zone.
V)animals can die and get fatigue easily.
============≈==================
6a)
Scarcity: This refers to the basic economic problem, the
gap between limited, I.e Scarce – resources and
theoretically limitless wants.
Scale of preference: is something used in economics to
set a
list of products or services in the highest demand. Or the
arrangement of our want in
ascending or descending order of importance or priority.
6b)
i)Agricultural insurance plays an important role in
stimulating investment in agriculture and stabilising
farmers income
ii)Insurance assist farmers in assessing new
opportunities by improving their ability to borrow either
cash or in kind as credit facilities.
iii)Insurance improves agricultural technology
iv)Farmers can experience safer and possibly higher
return
6d
i Honey bees provide 80% of pollination for vegetable,
fruit, seed and flower crops.
ii They also pollinate the forage crops fed to dairy and
meat animals
iii industrial purpose
Iv employment

V invome generation

(2a)
-Availability of water(Rainfall)
-Availability of source of water for irrigation
-The type of soil or land where irrigationis to be
carried out
-Availability of machine for installation
-Technical know how
(2b)
-Inadequate water supply or source of water
-High cost of equipment
-Lack of adequate technical know how
-Excessive dissolution of salts in irrigated water
prevent proper growth
-Disturbance of movement of farm machinery
(2c)
DRAW THE RECTANGLE
(2di)
-Disc polugh
-Mould board plough
(2dii)
-Harrow(Disc harrow)
-Ridger
-Cultivator

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