Waec 2016 Agricultural Science Obj And Theory Answers – May/June Expo - Gidifans

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Agric answers

Agric obj
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1a)
Subsistence Agriculture
i) Farming practices in which crops are cultivated for local consumption.
ii) Farms are small and food crops are cultivated such as rice and wheat.
iii) Old tools and implements are used by the farmers.
iv) Depends on monsoon and there is greater use of manpower.
v)keep your family fed.
Commercial Agriculture
i) Farming practice in which goods produced are mainly for the market to get cash.
ii) Farms are larger and cash crops are cultivated. Such as cotton, sugar-cane, jute.
iii) Better implements are used and there are proper irrigation facilities.
iv) Less of manpower is used.
v)enables you to sell things like diamond mines and, in asia, tea or rubber plants.
1b)
INADEQUATE LAND
i)Expand the budget for agriculture, the governmental investment in rural infrastructure and governmental land.
ii)Plough back the revenues from till-land occupation tax and city maintenance fee into agriculture and rural economy
INADEQUATE FINANCE
i)Government can assist by setting
up special local banks whose job is to
extend credit to the rural farmers and
will be announce on radio for adequate
circulation of information.
ii)The Federal Government established the Agricultural Co-operative and Credit Bank to serve this purpose.
INCIDENCE OF DISEASE
i)utilization of hospital services
ii)vaccine efficacy
1c)
agricultural ecology is the
study of agricultural ecosystems and their
components as they function within
themselves and in the context of the
landscapes that contain them.
1d)
i)Pesticide leaching
ii)Fertilizers
iii)Organic contaminants
iv)Soil erosion and sedimentation
v)Tillage and nitrous oxide emissions
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2a)
Farm surveying is the process by which measurement of land is made on farm by tables,plans or layout on a specific purpose.
2b)
i)It is dangerous or fatal if carelessly handled.
ii)It is very expensive.
iii)It can cause fire hazards.
iv)It is not always regular.
2c)
i)To maintain efficiency in operation.
ii)To avoid damage.
iii)To prevent the iron areas from corrosion.
iv)To avoid breakage
2d)
Land according to agriculture refers to where productive activities such as growing of crops,rearing of animals and establishment of farmstead,etc are carried out.
2e)
i)Population pressure;-When there is high population,there will be limited land for agriculture.
ii)Mining;-Activities of mining renders the soil inadequate for agriculture
iii)Topography;-Some lands are located in a place where they will not be favourable for some crops.
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3a)
Staking is when yam is staked with strong stick or bamboo to ensure adequate exposure of the leaf
surface to sunlight and increases yield
3b)
The nusery needs of spacing 20cm x 20cm on a field of 3mx3m on a loamy soil containing organic matter in a filled up polythene bags.The seeds are
sown with shade to prevent it from direct heating by the sun and water and weeding is done twice daily or every morning/evening.
3c)
i)To reduce the breakage of grains
ii)It helps to bring vitamins to the outer layer of the grains
iii)It reduces the labour requirement to remove husk
iv)It saves time
3d)
Advantages:
i)It helps to increase the farmers income and standard of living
ii)It gives access to forest product
iii)It creates employment opportunities
Disadvantages:
i)Cultivation of selected crops
ii)Reluctance in releasing fertile soil

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6a)
print
i)newspaper
ii)hand bills
iii)pamplets
media
i)radio
ii)televison
iii)film show
6b)
i)it is not at tendious as in the case of individual method
ii)it enable extension workers to reach but to many farmers at a time
iii)it saves time and money
iv)it tends to show more intrest in what may be introduce
6c)
assembling as a marketing function;this is the re-gathering of various produce brought form different sources.it is also involving the repackage of produce in readness for final consumption
6d)
-maize streak symptom
i)reduced yield control
ii)destroy diseased plant
iii) use resistant varieties
-ground nut rosette symptoms
i)yellow leaves with mosaic mottling control
ii)early planting
iii)uproot and burn infected plant
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4a)
-Artificial insemination:Is the process by which semen of a desired male animal is inserted into the vulva of the female ie no physical contact between two animals
-Pen mating:Is the one which a group of male and female animals are allowed to mate at random without any preference
-Individual mating:The farmer selects the mate and female animals to be material with preference
4b)
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4c)
-They give beauty to the environment
-They provide capital when sold
-They help reduce green house effect
-They are used for decoration purposes
-They encourage pollination

5a)
Agricultural Insurance is a valuable business risk management tool that provides farmers with financial protection against production losses caused by natural perils, such as drought, excessive moisture, hail, frost, wind and wildlife.
5b)
i)Specific enterprise insurance are insurance organisations that offer insurance to Property and Casualty, Life, Accident, and Group Health Insurance-all of which are essential to small business owners. Enterprise Insurance Services not only come with Enterprise Bank’s reputation and reliability but with the same personable and customer-service oriented business philosophy that small business clients have come to expect.
ii)Fire insurance is insurance that is used to cover damage to a property caused by fire. Fire insurance is a specialized form of insurance beyond property insurance, and is designed to cover the cost of replacement, reconstruction or repair beyond what is covered by the property insurance policy.
iii)Life assurance is a type of insurance that protects an individual against
death. If you have life insurance, the insurer pays a certain amount of money to a beneficiary upon your death. You pay a premium in exchange for the payment of benefits to the beneficiary.
5c)
The Yolk: The chicken egg starts as an egg yolk inside a hen. A yolk (called an oocyte at this point) is produced by the hen’s ovary in a process called ovulation.
Fertilization: The yolk is released into the oviduct (a long, spiraling tube in the hen’s reproductive system), where it can be fertilized internally (inside the hen) by a sperm. The Egg White (albumin) : The yolk continues down the oviduct (whether or not it is fertilized) and is covered with a membrane (called the vitelline membrane), structural fibers, and layers of albumin (the egg white). This part of the
oviduct is called the magnus. The Chalazae: As the egg goes down through the
oviduct, it is continually rotating within the spiraling tube. This movement twists the structural fibers (called the chalazae), which form rope-like strands that anchor the yolk in the thick egg white. There are two chalazae anchoring each yolk, on opposite ends of the egg. The Eggshell : The eggshell is deposited around
the egg in the lower part of the oviduct of the hen, just before it is laid. The shell is made of calcite, a crystalline form of calcium carbonate. This entire trip through the oviduct takes about
one day. Growth of the Embryo: The fertilized blastodisc (now called the blastoderm) grows and becomes
the embryo. As the embryo grows, its primary food source is the yolk. Waste products (like urea) collect in a sack called the allantois. The exchange of oxygen and carbon dioxide gas occurs through the eggshell; the chorion lines the
inside surface of the egg and is connected to the blood vessels of the embryo.
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