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Thursday March 28th 2024

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Exam Answers: 2018 JAN/FEB WAEC GCE: 100% Verified Agric Science Questions And Answers

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100% VERIFIED AGRIC SCIENCE OBJ ANSWERS
1-10: AAAADABBBB
11-20: BDCCDACABC
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31-40: DBBBBCDDDD
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100% VERIFIED AGRIC SCIENCE THEORY ANSWERS
1a) Farm surveying is the process of measuring and mapping out the position, height, size and boundary of an area of farmland.
(1b)
i. It helps to know the size or hectare of a farmstead and the arrangement of land for proper usage without the risk of land degradation.
ii. Farm surveying help to make proper use of resources available and also to project the maximum profit achieved.
iii. Results of farm survey can be used as collateral for security loan from financial institutions.
iv. Absolute and relative positions of points on the farm and earth’s surface can be determined.
v. The topography or gradient of the farm land can also be determined.
(vi)It enables the farmer to lay his farm into plots.
(1c)
i. Ranging pole is used for setting a straight line durng farm surveying.
ii. Gunter’s chain is used in taking shot or detailed measurement of length and breadth of farmland during surveying.
iii. Prismatic compass is used to find out the bearing of the traversing and included angles between lands, waypoints and direction.
iv. Measuring tape is used in measuring angular distances.
v. Theodolite is used to measure horizontal or vertical angles or planes.
(1d)
i. The initial cost of a machine is high. An idle machine is a waste.
ii. Adoption of certain machines will lead to unemployment.
iii. Machines are subject to break-down and lie idle when electricity fails (if it is electrically operated).
iv. Depreciation charges are high; this will reduce the profit.
v. Certain types of machines may become obsolete within a short span of time.
========================

(3a)
(i) It provides food for human
(ii) It checks soil erosion
(iii) It brings about vegetation cover
(iv) It brings about rainfall
(v) Forest improves soil fertility
(vi) It creates job opportunities
(3b)
(i) Oganic manuring:
– It improves the activities of the soil micro organisms
– It improves soil fertility
– It improves yield
(ii) Bush burning:
– It exposes the soil to sunlight
– It destroys soil microorganisms
– It reduces soil fertility
(iii) Tillage:
– It enhances soil aeration
– It helps to mix the soil with organic matters
– It also improves the activities of the soil micro organisms
(iv) Clean clearing:
– It reduces the effects pof parasites and diseases
– It reduces soil fertility
– It helps for easy cultivation and harvest
========================

(4ai)
Natural mating is the type of mating by which the the farm animals are allowed to move together and mate freely. Natural mating also enable the farm animals to select their mating partners while ARTIFICIAL Mating is the type of mating that involves the introduction of sperm(semen) into the female genital tract by the farmer through artificial means.
(4aii)
(i) Pen mating
(ii) Hand mating
(4bi)
(i) It helps to enhance growth and development of the farm animals
(ii) It helps the body of the farm animals to build enough immune
(iii) It makes the bones of animals strongs
(iv) It helps to resist diseases
(4bii)
(i) Meat
(ii) Bones
(iii) Blood
(iv) Egg
(4c)
(i) It helps the farm animals to get adequate food
(ii) It helps to improve vegetations
(iii) it helps the farm animals to be free from diseases and parasites
(iv) It helps the farmer to control the farm animals easily
========================

(5a)
(i) It is used to regulate body temperature
(ii) It is required for metabolic reactions in an animal’s body.
(iii) It helps in digestion of food and feeds
(iv) It is used in homeostasis in animals’ body.
(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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