EXPO: NECO Agricultural Science Questions and Answers 2023/2024

NECO Agricultural Science Questions and Answers: This NECO 2023 Agricultural Science;Theory and Objective (OBJ).expo question and answer is free for all candidates writing this year exams. If you are among those writing 2023 NECO Examination, Feel free to expect free answer here.

NECO Agricultural Science Questions and Answers

About NECO Agricultural Science Questions and Answers

The National Examination Council (NECO) is a Nigerian Exams Body that has been in operation since 2000 and is recognized globally.


NECO Agricultural Science Questions and Answers: Candidate that applied for the NECO in any States should BOOKMARK this page for all and latest NECO Agricultural Science Exam Ekpo.

Agricultural Science Wednesday, 19th July.

•             Agricultural Science 2 (Essay)** › 10:00am hrs. – 12:30pm .











(i) Environmental Protection: Land use legislation aims to preserve and protect the environment by regulating activities such as deforestation pollution and land degradation.

(ii) Sustainable and Planned Development: The government enforces land use legislation to ensure that development occurs in a strategic and organized manner promoting sustainable growth and preventing haphazard urbanization.

(iii) Public Health and Safety: Legislation helps in preventing the establishment of hazardous industries near residential areas ensuring public health and safety.

(iv) Resource Management: Land use legislation helps in managing and conserving natural resources such as water minerals forests and agricultural lands.

(v) Preservation of Cultural and Historical Heritage: Legislation can protect culturally significant areas or historical landmarks from being destroyed or altered.

(vi) Conflict Resolution: Land use legislation can help resolve conflicts arising from competing land use interests ensuring fair allocation and use of land resources.



(i) Education and Training: NGOs provide training and awareness programs to beekeepers equipping them with knowledge and skills to improve beekeeping practices.

(ii) Capacity Building: NGOs offer technical assistance and support to beekeepers helping them enhance their knowledge of beekeeping techniques hive management and honey production.

(iii) Infrastructure Development: NGOs may help develop beekeeping infrastructure such as apiaries honey processing facilities and storage units to improve production and enhance value chain efficiency.

(iv) Market Access: NGOs assist beekeepers in accessing local and international markets for their bee products facilitating trade and boosting income generation.

(v) Policy Advocacy: NGOs advocate for supportive policies and regulations that promote sustainable beekeeping practices and protect bee habitats.

(vi) Research and Development: NGOs contribute to research efforts related to beekeeping bee diseases and honey production technologies providing valuable scientific knowledge to enhance productivity and sustainability.



(i) Root Extraction

(ii) Lesser Soil Disturbance

(iii) Cost and Efficiency

(iv) Selective Clearing

(v) Environmental Impact

(vi) Reusability



(i) Accessibility

(ii) Topography

(iii) Soil Fertility

(iv) Security

(v) Livestock Management

(vi) Future Expansion



Soil pollution refers to the contamination of soil with harmful substances that adversely affect its quality and productivity. It is usually caused by the release of pollutants into the soil through human activities such as industrial operations improper waste disposal and the use of pesticides and fertilizers.



(i) Implementing proper waste management practices

(ii) Promoting sustainable agriculture

(iii) Installing wastewater treatment systems

(iv) Implementing stricter regulations

(v) Encouraging the use of environmentally friendly products

(vi) Creating awareness and education


(i) Sample collection: Collect representative soil samples from the area of interest using appropriate sampling techniques and tools.

(ii) Sample preparation: Clean the soil samples by removing debris stones and other impurities. Air-dry the samples and crush them to a uniform particle size.

(iii) Extraction of nutrients: Extract the plant-available nutrients from the soil using suitable extraction solutions such as a dilute acid or salt solution. This process helps to determine nutrient concentrations in the soil.

(iv) Analysis and interpretation: Analyze the extracts using appropriate laboratory techniques such as spectrophotometry or titration to determine nutrient concentrations. Interpret the results to assess nutrient availability and soil fertility status.




(i) Prevents waterlogging

(ii) Enhances aeration

(iii) Reduces erosion (iv) Improves soil structure

(v) Prevents nutrient leaching

(vi) Minimizes disease incidence



(i) Loss of water resources

(ii) Soil erosion

(iii) Cost and maintenance

(iv) Environmental impact

(v) Disruption of natural habitats

(vi) Unintended consequences



Given: Survey plan area = 1.960 cm²

1 square meter = 10000 square centimeters

Therefore 1.960 cm² = 1.960 / 10000 = 0.000196 square meters

So the area of the farm land is 0.000196 square meters.


Number of mounds = Area of farm land / Area covered by one mound

Number of mounds = 0.000196 square meters / 2 square meters

Number of mounds = 0.000196 / 2 = 0.000098 mounds

So approximately 0.000098 mounds can be made on the farm land.


To calculate the total number of setts needed for planting on the mounds we need to consider the seed rate of 5000 setts per hectare.

One hectare = 10000 square meters

Number of setts needed = (Area of farm land in square meters / One hectare) × Seed rate

Number of setts needed = (0.000196 square meters / 10000 square meters) × 5000 setts/ha

Number of setts needed = 0.0000000196 × 5000 = 0.098 setts

So approximately 0.098 setts will be required.


(i) Intercropping

(ii) Crop rotation

(iii) Alley cropping



(i) Soil conservation

(ii) Nutrient cycling

(iii) Shade and microclimate regulation

(iv) Windbreaks

(v) Wildlife habitat

(vi) Agroforestry products



(i) Witchgrass (Panicum capillare)

(ii) Squirting cucumber (Ecballium elaterium)

(iii) Shepard’s Purse (Capsella bursa-pastoris)

(iv) Hairy Bittercress (Cardamine hirsuta)

(v) Jewelweed (Impatiens capensis)

(vi) Mouse-ear cress (Arabidopsis thaliana)



Scale of preference refers to a ranking or order of individuals’ preferences for different goods and services. It represents the way people make choices based on their desires and needs, given their limited resources or income. In essence, individuals assign relative importance to various options and make decisions to maximize their utility or satisfaction.


To calculate the elasticity of demand, we use the formula:

Elasticity of demand = Percentage change in quantity demanded / Percentage change in price

Given data:

Quantity demanded in 2012 (Q1) = 59,800 grape fruits

Price in 2012 (P1) = N450 per basket

Quantity demanded in 2018 (Q2) = 28,500 grape fruits

Price in 2018 (P2) = N750 per basket

Now, calculate the percentage change in quantity demanded:

Percentage change in quantity demanded = (Q2 – Q1) / Q1) x 100

Percentage change in quantity demanded = (28,500 – 59,800) / 59,800) x 100

= -31,300/59,800 x 100

= -0.52 x 100

= -52

Percentage change in quantity demanded ≈ -52%

Next, calculate the percentage change in price:

Percentage change in price = ((P2 – P1) / P1) x 100

Percentage change in price = ((750 – 450) / 450) x 100

= 300/450 x 100

= 0.67 x 100

= 67

Percentage change in price = 67%

Now, calculate the elasticity of demand:

Elasticity of demand ≈ (-52% / 67%) = -0.76


The demand for grape fruits is inelastic. This is because the calculated elasticity of demand (-0.76) is less than 1.


(i) Price of Substitutes

(ii) Consumer Income

(iii) Consumer Preferences and Tastes


(i) Sales Record

(ii) Inventory Record


(i) Visual Learning: Demonstrations offer a visual learning experience, making it easier for the audience to understand complex concepts and techniques through practical examples.

(ii) Active Participation: Demonstrations encourage active participation, allowing the audience to engage directly in the learning process by observing and performing tasks.

(iii) Practical Skills Development: Participants can learn and practice specific skills in real-time, enhancing their competency and confidence in applying the knowledge in their own settings.

(iv) Better Retention: Visual and hands-on learning experiences are known to improve information retention, as participants can see and experience the subject matter firsthand.

(v) Problem-Solving Opportunities: Demonstrations provide opportunities for participants to observe problem-solving techniques and responses to challenges, which they can apply in similar situations.

(vi) Addressing Language Barriers: Demonstrations can transcend language barriers, as they rely more on visual cues and actions rather than verbal communication, making them suitable for diverse audiences

PLS note that no phone number in this post is associated with jobslimes.com. don’t call anybody and ask for EXPO. Beware of fraud (419)

OBJ Answer 2023 NECO Agricultural Science.

Please for any inquiry on NECO Agricultural Science Questions and Answers use the comment box below as we will act swiftly.


Leave a Reply