WAEC GCE 2024 AGRIC ANSWER


AGRIC. SCIENCE
1-10: CCDADACDCD
11-20: CBBCBDDDDC
21-30: DCCBCCAAAD
31-40: AABBBCBBDA
41-50: CCDCCCDDCC


(1ai)
Ibadan, Oyo State, Nigeria.

(1aii)
(PICK ANY THREE)
(i) Cassava
(ii) Maize
(iii) Yam
(iv) Banana and Plantain
(v) Cowpea

(1aiii)
(PICK ANY FIVE)
(i) Promoting sustainable land management practices to prevent soil degradation.
(ii) Enhancing rural livelihoods by improving market access for farmers.
(iii) Reducing post-harvest losses through innovative storage and processing technologies.
(iv) Supporting policy development for agriculture and food systems.
(v) Conducting research on integrated pest management to reduce dependency on chemical pesticides.
(vi) Developing sustainable agricultural methods to combat climate change effects.
(vii) Promoting the cultivation of nutritious and high-value crops to enhance food security.

(1bi)
SUNLIGHT:
(PICK ANY THREE)
(i) Solar energy systems can be expensive to install.
(ii) Limited availability in regions with long winters.
(iii) Requires large surface areas for solar panels.
(iv) Solar energy systems may need regular maintenance.
(v) Energy production fluctuates throughout the day and year.

(1bii)
ELECTRICITY:
(PICK ANY THREE)
(i) High consumption costs for large farms.
(ii) Vulnerability to power outages and interruptions.
(iii) Requires infrastructure that may not be available in remote areas.
(iv) Potential for electrical overloading in rural areas.
(v) Can cause environmental degradation if the power source is not renewable.

(1biii)
DRAUGHT ANIMALS:
(PICK ANY THREE)
(i) Limited by the strength and endurance of the animal.
(ii) Difficult to transport heavy machinery or large loads.
(iii) Animals can be prone to illness and injury.
(iv) Need for proper shelter and care, which adds to the cost.
(v) May require extensive training for animals to perform specific tasks.

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(2a)


(2bi)
Deforestation refers to the large-scale clearing or removal of forests or trees, often for agricultural, industrial, or urban development purposes, resulting in the loss of forest cover.

(2bii)
(PICK ANY FIVE)
(i) They provide raw materials such as timber, firewood, and medicinal products.
(ii) Forests help in controlling climate by influencing local and global temperatures.
(iii) Trees act as windbreaks, reducing the effects of strong winds and storms.
(iv) Forests play a role in maintaining water quality by filtering pollutants.
(v) They enhance soil fertility through the decomposition of fallen leaves and organic matter.
(vi) Forests support the livelihoods of communities by offering resources for food and income.
(vii) Trees enhance the aesthetic value of landscapes, contributing to tourism and recreation.

(2c)
(PICK ANY FIVE)
(i) Promoting nutrient cycling by breaking down complex organic compounds.
(ii) Contributing to soil formation through the weathering of rocks.
(iii) Suppressing soil-borne diseases by outcompeting harmful pathogens.
(iv) Enhancing soil water retention by improving its structure.
(v) Facilitating plant root growth by creating pores and channels in the soil.
(vi) Recycling essential minerals like phosphorus and potassium.
(vii) Forming symbiotic relationships (e.g., mycorrhizal fungi) that help plants absorb nutrients more efficiently.

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(3ai)
(PICK ANY ONE)
Hybridization is the process of crossing two genetically different plants or animals to produce offspring with desirable traits from both parents.

OR

Hybridization is the process of combining two or more different varieties, species, or breeds to produce a new organism with desirable traits.

(3aii)
(PICK ANY ONE)
(i) Bananas are sterile and cannot produce viable seeds.

(ii) Bananas lack seeds and are typically propagated using suckers or tissue culture.

(iii) Most commercial banana varieties are genetically uniform.

(iv) Bananas have limited genetic diversity.

(3bi)
Grasses:
(PICK ANY THREE)
(i) Guinea grass
(ii) Napier grass
(iii) Vetiver grass
(iv) Elephant grass
(v) Buffel grass

(3bii)
Legumes:
(PICK ANY THREE)
(i) Mucuna
(ii) Pigeon pea
(iii) Cowpea
(iv) Soybean
(v) Groundnut
(vi) Lablab

(3ci)
Phosphorus fertilizers:
(PICK ANY THREE)
(i) Single Superphosphate
(ii) Triple Superphosphate
(iii) Rock Phosphate
(iv) Diammonium Phosphate
(v) Monoammonium Phosphate

(3cii)
Potassium fertilizers:
(PICK ANY THREE)
(i) Muriate of Potash
(ii) Sulphate of Potash
(iii) Potassium Nitrate
(iv) Potassium Chloride
(v) Potassium Sulphate

(3d)
(PICK ANY THREE)
(i) Dioscorea rotundata (White yam)
(ii) Dioscorea alata (Water yam)
(iii) Dioscorea esculenta (Lesser yam)
(iv) Dioscorea bulbifera (Aerial yam)
(v) Dioscorea dumetorum (Bitter yam)
(vi) Dioscorea cayenensis (Yellow yam)

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(4ai)
Botanical name: Hevea brasiliensis

(4aii)
Two methods of propagation:
(i) Budding
(ii) Stem Cuttings

(4aiii)
Soil requirement: Rubber thrives in deep, well-drained, loamy soils with a pH of 4.5–6.5.

(4aiv)
Fertilizer application: Apply NPK fertilizers (e.g., 12:6:6) in split doses during the early growth stages and micronutrients as needed.

(4av)
Harvesting: Rubber is harvested by tapping ie making incisions on the bark of mature tree to collect latex.

(4bi)
Sorghum:
(PICK ANY TWO)
(i) Stem borer
(ii) Armyworm
(iii) Aphids
(iv) Shoot fly

(4bii)
Cassava:
(PICK ANY TWO)
(i) Cassava mealybug
(ii) Green spider mite
(iii) Whiteflies
(iv) Grasshopper

(4biii)
Tomato:
(PICK ANY TWO)
(i) Tomato fruit borer
(ii) Whiteflies
(iii) Leaf miners
(iv) Aphids

(4c)
(PICK ANY SIX)
(i) Heat stress in chicks
(ii) Reduced feed intake
(iii) Dehydration
(iv) Increased water consumption
(v) Stunted growth
(vi) Increased mortality
(vii) Poor feather development
(viii) Agitation and discomfort
(ix) Reduced immunity against diseases

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(5a)


(5b)
(PICK ANY FOUR)
(i) Genetic makeup
(ii) Nutritional status
(iii) Vaccination history
(iv) Hygiene practices
(v) Age of the animal
(vi) Stress levels

(5c)
(PICK ANY FOUR)
(i) Bush burning destroys organic matter, reducing soil nutrients.
(ii) It kills plants, animals, and microorganisms essential for ecosystem balance.
(iii) Smoke from bush burning contributes to air pollution and respiratory health issues.
(iv) It can lead to widespread, uncontrollable wildfires, endangering lives and property.
(v) Bush burning releases greenhouse gases, worsening global warming.
(vi) It destroys crop residues that serve as livestock feed.


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(6a)


(6b)


(6c)
(PICK ANY FOUR)
(i) High milk production capacity.
(ii) Well-developed udder with evenly spaced and functional teats.
(iii) Strong and healthy body structure.
(iv) Calm temperament and easy to handle.
(v) Regular reproductive cycle and high fertility.
(vi) Resistance to common diseases and good overall health.
(vii) Proper feeding habits and efficient feed conversion.

(6d)
(i) Feel method.
(ii) Sieve analysis.
(iii) Sedimentation method (using water)