WAEC SSCE - Agricultural Science - 2014…

Question 1 Report

A bag of fertilizer has a ratio of 10:0 written on it. This means that the fertilizer is a

lime fertilizer

nitrogenous fertilizer

phosphate fertilizer

potassium fertilizer

Genetics

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Question 2 Report

Ornamental crops are used for the following purposes except

landscaping

interior decoration

as symbols of love

as fodder

Forest Management

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Question 3 Report

Calculate the annual depreciation of a farm machinery with a total depreciation of D63,000 and a useful life of 5 years

D6,300.00

D9,450.00

D12, 600.00

Radio and posters

Answer Details

The annual depreciation of the farm machinery can be calculated using the straight-line method of depreciation. This method involves dividing the total depreciation by the useful life of the asset to determine the annual depreciation expense. In this case, the total depreciation of the farm machinery is D63,000 and the useful life is 5 years. Therefore, the annual depreciation can be calculated as: Annual Depreciation = Total Depreciation / Useful Life Annual Depreciation = D63,000 / 5 Annual Depreciation = D12,600.00 Therefore, the annual depreciation of the farm machinery is D12,600.00. Option (c) is the correct answer. It is important to note that depreciation is a method used to allocate the cost of an asset over its useful life. It represents the decrease in the value of the asset due to wear and tear, age, and obsolescence. By calculating the annual depreciation expense, farmers can plan for the replacement of the asset at the end of its useful life and ensure that the costs are properly allocated over time.

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Mechanization And Sources Of Farm Power

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Question 4 Report

An example of fungal disease of stored grain is

mould

streak

mosaic

damping off

Answer Details

An example of fungal disease of stored grain is mould. Mould is a type of fungus that grows on stored grain, especially in damp conditions. It can cause discoloration of the grain, foul odors, and produce harmful toxins that can affect both human and animal health. Mould is a major problem in the storage of grains and can lead to significant losses in quality and quantity if not properly managed.

Read lesson note on Crop Diseases (JAMB)

Crop Diseases

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Question 5 Report

The following symptoms were observed in a bull: l watery discharged from eyes and nostrils: II Sore in the mouth and nostrils; III excessive saliva with offensive odour; IV sever diarrhoea with blood stand farces.What disease is the bull suffering from?

foot and mouth

brucellosis

tuberculosis

rinderpest

Answer Details

Based on the symptoms observed in the bull, the disease that the bull is most likely suffering from is "Foot and Mouth Disease" (FMD). FMD is a highly contagious viral disease that affects cloven-hoofed animals such as cattle, pigs, sheep, and goats. The symptoms of FMD in animals include watery discharge from the eyes and nostrils, soreness in the mouth and nostrils, excessive salivation with offensive odor, and severe diarrhea with blood-tinged feces. While there are other diseases that may cause similar symptoms, FMD is characterized by the combination of these symptoms in cloven-hoofed animals. FMD is a significant threat to animal health and agriculture as it can cause large-scale outbreaks and economic losses due to trade restrictions. Therefore, based on the symptoms described, the most likely disease that the bull is suffering from is Foot and Mouth Disease (FMD). It is essential to isolate and treat the infected animal promptly to prevent the spread of the disease to other animals.

Read lesson note on Crop Diseases (JAMB)

Read lesson note on Diseases Of Farm Animals (WAEC)

Read lesson note on Cropping Systems, Planting Patterns And Plant Density (JAMB)

Read lesson note on Types And Classification Of Farm Animals (WAEC)

Crop Diseases

Diseases Of Farm Animals

Cropping Systems, Planting Patterns And Plant Density

Types And Classification Of Farm Animals

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Question 6 Report

Control of maize stem borer is most effective when

affected crops are uprooted and burnt

rodenticides are applied

nematicides are applied

ferilizers are applied before planting

Crop Diseases

Growth, Development And Reproduction

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Question 7 Report

The appropriate farm tool for lifting tomato seedlings for transplanting is the

dibber

hoe

hand trowel

hand fork

Answer Details

The appropriate farm tool for lifting tomato seedlings for transplanting is the hand trowel. A hand trowel is a small gardening tool that is designed for digging and scooping soil. It has a pointed blade that is perfect for getting under the roots of seedlings, and a comfortable handle that allows the user to grip it firmly. When transplanting tomato seedlings, it is important to be gentle and avoid damaging the roots as much as possible. The hand trowel is the right tool for this task because it allows the user to lift the seedling out of the ground with minimal disturbance to the roots. A dibber is a tool that is used to make holes in the soil for planting seeds or seedlings, but it is not suitable for lifting seedlings out of the ground. A hoe and hand fork are larger tools that are used for cultivating and breaking up soil, and are not appropriate for the delicate task of lifting seedlings. Therefore, the hand trowel is the appropriate farm tool for lifting tomato seedlings for transplanting.

Read lesson note on Farm Tools And Equipment (WAEC)

Farm Tools And Equipment

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Question 8 Report

Pigs wallow in muddy pools of water primarily to

ensure adequate exercise

obtain forage materials

dislodge ectoparasite from their body

lower their body temperature

Answer Details

Pigs wallow in muddy pools of water primarily to lower their body temperature. Pigs cannot sweat and they have a limited number of sweat glands which makes it difficult for them to regulate their body temperature. By wallowing in mud or water, pigs are able to cool themselves down as the water evaporates from their skin. Additionally, the mud acts as a form of sunscreen and protects their skin from the sun's harmful rays.

Read lesson note on Diseases Of Farm Animals (WAEC)

Read lesson note on Types And Classification Of Farm Animals (WAEC)

Diseases Of Farm Animals

Types And Classification Of Farm Animals

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Question 9 Report

The practice of growing different crops in sequence on a piece of land is known as

rotational grazing

monoculture

crop rotation

mixed farming

Cropping Systems, Planting Patterns And Plant Density

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Question 10 Report

A farm produce which does not require fermentation during processing is

cocoa beans

coffee beans

cassava tubers

rice grains

Answer Details

Out of the four options given, the farm produce that does not require fermentation during processing is rice grains. Fermentation is a process that involves the breakdown of carbohydrates into simpler compounds like acids, gases, or alcohol by microorganisms such as yeast or bacteria. This process is commonly used in the production of various food and beverage products, such as bread, cheese, wine, and beer. However, rice grains do not require fermentation during processing. The process of producing rice involves several steps, such as threshing, hulling, milling, and polishing. These processes remove the outer layers of the rice grain, leaving behind the starchy endosperm, which is the edible part of the rice. Therefore, rice grains can be processed without the need for fermentation. In contrast, cocoa beans, coffee beans, and cassava tubers may require fermentation during processing to achieve desirable flavors, colors, or textures.

Read lesson note on Crop Diseases (JAMB)

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Crop Diseases

Farm Inputs

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Question 11 Report

The main objective of flushing in animal production is to

promote muscle development

make parturition easier

promote multiple births

make the animal lose weight

Answer Details

The main objective of flushing in animal production is to promote multiple births. Flushing is a feeding practice used in animal production to improve the reproductive performance of female animals. During flushing, the animal is given a diet that is higher in energy and nutrients than the normal maintenance diet, for a period of time prior to mating. This is done to increase the body condition score of the animal and stimulate the reproductive system, leading to increased ovulation rates and multiple births. Thus, flushing is an important management practice used to increase the reproductive efficiency and profitability of animal production.

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Reproduction In Farm Animals

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Question 12 Report

It is important to clean and grease plough discs after use to

prevent rusting

sharpen the discs

reduce friction

reduce the lifespan

Answer Details

It is important to clean and grease plough discs after use to prevent rusting. Plough discs are made of metal and are exposed to moisture, which can cause them to rust over time. Rusting can weaken the discs and make them less effective at cutting through the soil, which can reduce the quality of the ploughing. Cleaning the discs and applying grease after use helps to protect them from moisture and prevent rusting, ensuring that they last longer and perform better in the future. Sharpening the discs or reducing friction are not the main reasons for cleaning and greasing plough discs after use.

Read lesson note on Farm Tools And Equipment (WAEC)

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Farm Tools And Equipment

Farm Inputs

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Question 13 Report

Cultural control of crop diseases involves the following practices except

practising crop rotation

planting disease resistant varieties

using insecticides

fallowing of farmland

Answer Details

The practice of using insecticides is not considered a cultural control measure for crop diseases. Cultural control of crop diseases involves various farming practices that aim to reduce the incidence and severity of plant diseases. Planting disease-resistant crop varieties and practicing crop rotation are common cultural control practices that farmers use to manage plant diseases. Crop rotation involves alternating crops grown in a particular field over time, which helps to disrupt the life cycle of plant pathogens and reduce the build-up of disease-causing organisms in the soil. Fallowing farmland is another cultural practice where farmers leave their farmland unplanted for a season or more, allowing the soil to rest and the build-up of disease-causing organisms to decrease. This practice also helps to reduce soil erosion and maintain soil fertility. Insecticides are chemical agents used to kill insects and other arthropods that may attack crops. While insecticides can help control insect pests, they are not considered a cultural practice as they do not aim to reduce the incidence or severity of plant diseases. Therefore, the practice that is not considered a cultural control measure for crop diseases is the use of insecticides.

Read lesson note on Crop Diseases (JAMB)

Read lesson note on Types And Classification Of Farm Animals (WAEC)

Read lesson note on Farm Inputs (JAMB)

Crop Diseases

Types And Classification Of Farm Animals

Farm Inputs

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Question 14 Report

The common name for Andropogon gayanus is

Elephant grass

Northern gamba grass

Guinea grass

Giant star gass

Answer Details

The common name for Andropogon gayanus is "Gamba Grass".

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Genetics

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Question 15 Report

In agricultural production, farm gate price is mostly enjoyed by

middlemen

producers

commodity boards

cooperative societies

Farm Management

Soil

Fisheries And Wildlife

Agricultural Extension

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Question 16 Report

The method of surface irrigation widely used in rice fields is

basin irrigation

wild flooding

furrow irrigation

border strip

Irrigation And Drainage

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Question 17 Report

Water in a fish pond is made suitable for fish by

fertilization

liming

manuring

silting

Answer Details

Water in a fish pond needs to be of good quality for fish to grow and thrive. One way to achieve this is by making it suitable through a process called liming. Liming involves the addition of a material, such as agricultural lime or calcium carbonate, to the water to adjust its pH level. This is important because fish require a specific pH range in the water they live in to be healthy. In addition to liming, other methods like fertilization and manuring can be used to promote the growth of aquatic plants and algae, which provide food for fish. Silting is not a method for making water suitable for fish, as it involves the accumulation of sediment and organic matter, which can reduce water quality and oxygen levels, making it unsuitable for fish to live in.

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Read lesson note on Animal Feeds And Feed Stuffs And Their Local Sources (WAEC)

Roles Of Government And NGOs In Agricultural Development

Animal Feeds And Feed Stuffs And Their Local Sources

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Question 18 Report

Commercial agriculture is characterised by

use of machines

small farm holdings

low capital investment

little research activity

Answer Details

Commercial agriculture is characterized by the use of machines for various agricultural operations such as planting, cultivation, harvesting, and processing of crops. This is because commercial agriculture involves the production of crops and livestock on a large scale for commercial purposes, such as for sale to markets, processing plants, or export. In contrast, small farm holdings are typically associated with subsistence farming, where crops are grown primarily for personal consumption and not for sale. Low capital investment is also not typically associated with commercial agriculture, as it often requires significant investment in land, equipment, and labor to establish and maintain large-scale agricultural operations. Moreover, commercial agriculture often involves significant research activity to improve crop yields, develop new crop varieties, and address challenges such as pests and diseases. This research is often conducted by government agencies, universities, and private companies to support and enhance the productivity and profitability of commercial agriculture. Therefore, commercial agriculture is characterized by the use of machines, large-scale farming operations, significant capital investment, and significant research activity to improve productivity and profitability.

Read lesson note on Mechanization And Sources Of Farm Power (JAMB)

Read lesson note on Agricultural Mechanization (WAEC)

Mechanization And Sources Of Farm Power

Agricultural Mechanization

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Question 19 Report

Calculate the amount of maize seeds required by a farmer to cultivate 5 hectares of farmland at the recommended seed rate of 25kg/hectare

50kg

75kg

100kg

125kg

Crop Improvement

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Question 20 Report

Which of the following pairs of farming systems uses bush fallowing?

crop rotation and land rotation

shifting cultivation and land rotation

land rotation and mixed farming

crop rotation and monoculture

Answer Details

The farming system that uses bush fallowing is shifting cultivation, which involves cutting down and burning a plot of land to create a farm, planting crops for a few years until the soil is depleted, then moving on to a new plot and allowing the old one to regenerate through natural vegetation for a few years before returning to it. Therefore, the correct answer is "shifting cultivation and land rotation."

Read lesson note on Cropping Systems, Planting Patterns And Plant Density (JAMB)

Cropping Systems, Planting Patterns And Plant Density

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Question 21 Report

Weeds which produce large hollow seeds would most likely be dispersed by

wind

water

insect

explosion

Answer Details

Weeds that produce large hollow seeds are most likely to be dispersed by the wind. This is because the seeds are light in weight and have a cavity, which makes them easy to be carried away by even the slightest breeze. As the wind blows, the seeds are lifted into the air and carried over long distances, where they can fall onto new soil and grow into new plants. The other options - water, insect, and explosion - are less likely for weeds with large hollow seeds as their seeds are not adapted for those forms of dispersal.

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Weeds

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Question 22 Report

The offspring which will result from a cross between heterozygous and homozygous dominant plants will be

100% heterozygous

70% heterozygous

50%heterozygous

20%heterozygous

Answer Details

The offspring which will result from a cross between heterozygous and homozygous dominant plants will be 50% heterozygous and 50% homozygous dominant. When we talk about genetic traits, an individual can have two copies of the same gene or two different versions (alleles) of the gene. In this case, the homozygous dominant parent has two copies of the dominant allele (AA), while the heterozygous parent has one copy of the dominant allele and one copy of the recessive allele (Aa). During reproduction, each parent contributes one copy of their alleles to the offspring. Therefore, the possible combinations of alleles that can be inherited from these parents are AA, Aa, and Aa. If we look at the ratio of genotypes (genetic makeup) among the offspring, we can see that 50% will inherit one copy of the dominant allele from the heterozygous parent (Aa), while the other 50% will inherit the dominant allele from both parents (AA). Therefore, all of the offspring will have the dominant phenotype (observable traits), but only half of them will be heterozygous. This pattern of inheritance is known as Mendelian inheritance and follows the principles established by Gregor Mendel in his studies of pea plants in the 19th century.

Read lesson note on Genetics (JAMB)

Genetics

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Question 23 Report

Control average gestation period in rabbits is

21 days

26 days

31 days

36 day

Answer Details

The average gestation period in rabbits can be controlled to 31 days. Gestation period refers to the time period between conception and birth of offspring. In rabbits, the average gestation period is around 31 days, although it can vary slightly depending on factors such as breed, age, and environmental conditions. Controlling the gestation period in rabbits is important for managing breeding and reproduction. By controlling the gestation period, breeders can plan for when offspring will be born and ensure that they are born during favorable seasons or market conditions. One method for controlling the gestation period in rabbits is through hormonal manipulation. This involves administering hormones to female rabbits to induce ovulation and synchronize breeding. By carefully timing the administration of hormones, breeders can control the timing of conception and therefore the gestation period. Therefore, the average gestation period in rabbits can be controlled to 31 days through hormonal manipulation, which can be an important tool for managing breeding and reproduction in rabbits.

Read lesson note on Anatomy And Physiology Of Farm Animals (JAMB)

Anatomy And Physiology Of Farm Animals

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Question 24 Report

The following symptoms were observed in a bull: l watery discharged from eyes and nostrils: II Sore in the mouth and nostrils; III excessive saliva with offensive odour; IV sever diarrhoea with blood stand farces.Which of the following measures would best control the disease?

Deworming animals

Vaccinating animals

Treating animals with antibiotics

Dipping animals

Diseases Of Farm Animals

Major Internal Organs Of Farm Animals

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Question 25 Report

Which of the following statements about budding is not true? The resulting crops

can withstand adverse climatic conditions

flower and bear fruit early

develop broader leaves for photosynthesis

are more disease resistant

Cropping Systems, Planting Patterns And Plant Density

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Question 26 Report

A major disadvantage of monoculture is that

soil texture is destroyed

soil microbes are destroyed

diseases and pests build up

farms cannot be mechanized

Answer Details

Monoculture is the practice of cultivating a single crop species over a large area of land. A major disadvantage of monoculture is that it creates an environment where diseases and pests can build up easily. This is because the large area planted with the same crop provides a perfect breeding ground for pests and pathogens that can destroy the crop. In addition, monoculture reduces the diversity of soil microbes that are essential for healthy soil. Over time, the continuous cultivation of a single crop can deplete the soil nutrients, leading to poor soil texture. Although it may be possible to mechanize a monoculture farm, this is not a major disadvantage.

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Read lesson note on Crop Diseases (JAMB)

Read lesson note on Types And Classification Of Farm Animals (WAEC)

Read lesson note on Plant Propagation Methods (JAMB)

Livestock And Fishing Equipment

Crop Diseases

Types And Classification Of Farm Animals

Plant Propagation Methods

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Question 27 Report

Forest regulations are formulated in order to encourage

deforestation

afforestation

bush burning

taungya farming

Answer Details

Forest regulations are formulated in order to encourage afforestation. Afforestation refers to the process of establishing a forest or stand of trees in an area where there was no forest before. Forest regulations aim to encourage afforestation by setting guidelines and rules for how forests can be managed and used. These regulations can include measures to protect existing forests from deforestation and degradation, such as limiting logging or clearing of land for agriculture or development. They may also encourage the planting of new trees and the establishment of new forests through programs such as reforestation or afforestation initiatives. Forest regulations can also promote sustainable forest management practices that balance the needs of economic development with environmental conservation. This can include guidelines for responsible logging, forest certification programs, and incentives for conservation and restoration of degraded forests. In contrast, forest regulations do not encourage deforestation, which is the permanent destruction of forests for non-forest uses such as agriculture or development. Bush burning, which involves deliberately setting fire to forests or other vegetation, is also not encouraged by forest regulations as it can have negative impacts on soil fertility, wildlife habitat, and air quality. Taungya farming, which is a type of agroforestry system where crops are grown in the understory of a newly established forest, may be encouraged by some forest regulations as a way to promote reforestation and provide livelihoods for local communities. Therefore, forest regulations are formulated primarily to encourage afforestation and sustainable forest management practices, while discouraging deforestation and harmful practices such as bush burning.

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Read lesson note on Forest Management (Silviculture) (JAMB)

Forest Management

Forest Management (Silviculture)

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Question 28 Report

A footbath on a poultry farm contains

herbicides

antiseptics

antibiotics

disinfectants

Main Pests And Parasites Of Farm Animals

Diseases Of Farm Animals

Animal Reproduction

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Question 29 Report

The major factor affecting distribution of crops in West Africa is

climate

soil

topography

disease

Answer Details

The major factor affecting the distribution of crops in West Africa is climate. Climate is the long-term pattern of weather conditions that prevail in a particular region. In West Africa, the climate is characterized by two main seasons, the rainy season and the dry season. The length and intensity of these seasons vary from place to place, and this affects the type of crops that can be grown in each region. For example, in areas with a long and intense rainy season, crops such as rice and maize can be grown successfully. These crops require a lot of water and can only grow in areas where there is enough rainfall to sustain them. In areas with a shorter rainy season, crops such as millet and sorghum are more common. These crops are able to tolerate drought conditions and can survive with less water. In addition to rainfall, temperature is another important factor that affects the distribution of crops in West Africa. Some crops, such as cocoa and coffee, require a specific temperature range to grow successfully. These crops are typically found in areas with a moderate climate. Therefore, climate is the major factor affecting the distribution of crops in West Africa. The type of crops that can be grown in a particular region is determined by the amount and distribution of rainfall, as well as the temperature range.

Read lesson note on Soil Profile (WAEC)

Read lesson note on Soil (WAEC)

Soil Profile

Soil

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Question 30 Report

Nutrient replenishment in soil can be enhanced by

crop removal

leaching

erosion

crop rotation

Answer Details

Nutrient replenishment in soil can be enhanced by crop rotation. Crop rotation is the practice of growing different crops on the same land in a specific order over time. This method has been used for centuries by farmers to improve soil health and productivity. Different crops have different nutrient requirements, and they also contribute different nutrients back to the soil when they decompose. By rotating crops, the nutrients in the soil are used more efficiently, and the risk of depletion is reduced. For example, legume crops such as beans and peas can fix nitrogen from the air and add it to the soil, while other crops like corn and wheat require large amounts of nitrogen to grow. Crop rotation also helps to break pest and disease cycles by interrupting the life cycles of pests and diseases that are specific to certain crops. This reduces the need for pesticides and herbicides, which can have negative impacts on the environment and human health. Overall, crop rotation is a sustainable and effective way to enhance nutrient replenishment in soil, improve crop yields, and protect the environment.

Read lesson note on Growth, Development And Reproduction (JAMB)

Growth, Development And Reproduction

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Question 31 Report

Which of the following is not an effect of over-graing on soil?

Improvement of soil structure

soil compaction

exposure of soil to erosion

depletion of soil nutrients

Answer Details

Improvement of soil structure is not an effect of over-grazing on soil. Over-grazing refers to the continuous or excessive grazing of livestock on a particular area of land, beyond its carrying capacity. This can have several negative effects on the soil, including soil compaction, exposure of soil to erosion, and depletion of soil nutrients. Soil compaction occurs when the soil is compressed, reducing the space between soil particles and making it difficult for air, water, and nutrients to penetrate the soil. Over-grazing can lead to soil compaction due to the trampling of livestock on the soil. Exposure of soil to erosion occurs when vegetation cover is removed, leaving the soil exposed to the elements. Over-grazing can cause this as it leads to the removal of vegetation by livestock, leaving the soil exposed to the sun, wind, and rain, which can cause erosion. Depletion of soil nutrients occurs when the soil loses its fertility due to continuous grazing and trampling. Over-grazing can lead to this by removing plant cover, which reduces the amount of organic matter added to the soil through leaf litter and root decay, and also by causing soil compaction, which reduces soil aeration and water infiltration, making it difficult for plants to grow. In summary, over-grazing has several negative effects on the soil, including soil compaction, exposure of soil to erosion, and depletion of soil nutrients. Improvement of soil structure is not an effect of over-grazing.

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Simple Farm Tools

Genetics

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Question 32 Report

Wind can be beneficial to crop production because it

aids weed seeds dispersal

aids pollination of crops

causes lodging of crops

causes rapid drying of wet soils

Answer Details

Wind can be beneficial to crop production because it aids in the pollination of crops. Wind moves the pollen from the anthers of flowers to the stigma, which helps in fertilizing the flowers and producing seeds. This process is known as wind pollination or anemophily. Wind also helps in the dispersal of pollen from one plant to another. Some crops that benefit from wind pollination include maize, wheat, and rice. However, excessive wind can also cause lodging of crops, which can lead to yield loss, and can cause rapid drying of wet soils, leading to water stress in crops.

Read lesson note on Meaning And Scope Of Agriculture (JAMB)

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Meaning And Scope Of Agriculture

Farm Inputs

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Question 33 Report

A mass of decayed plant and animal wastes processed in pits is referred to as

green manure

farmyard manure

compost manure

inorganic manure

Answer Details

The farm produce that is referred to as "a mass of decayed plant and animal wastes processed in pits" is compost manure. Compost manure is produced by the decomposition of organic matter such as plant and animal wastes in the presence of air, moisture, and microorganisms. The process of composting involves the collection of these materials and their placement in pits or compost bins. The decomposition process is facilitated by turning or mixing the materials periodically, which helps to promote aeration and the breakdown of the organic matter. The resulting product is a nutrient-rich soil amendment that can be used to improve soil fertility and structure, increase water retention, and promote plant growth. Compost manure is an excellent alternative to synthetic fertilizers because it is environmentally friendly, sustainable, and can help reduce waste. In contrast, green manure refers to the practice of growing specific plants, which are then plowed back into the soil to improve soil fertility. Farmyard manure, on the other hand, is a mixture of animal dung, urine, and bedding materials that are allowed to decompose before use as a soil amendment. Inorganic manure, also known as chemical fertilizer, is made from synthetic materials and does not contain organic matter.

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Question 34 Report

Continuous soil tillage could lead to

increased infiltration of water .

reduced run-off

break down of soil structure

improved soil texture

Answer Details

Continuous soil tillage can lead to the breakdown of soil structure. Soil structure refers to the arrangement of soil particles into aggregates or clumps. A good soil structure is important for healthy plant growth as it allows for air, water, and nutrient movement through the soil, as well as providing a habitat for soil organisms. Continuous soil tillage involves the regular disruption of the soil by plowing or digging to prepare the soil for planting. While this can initially improve soil aeration and water infiltration, over time it can lead to the breakdown of soil structure. This is because soil tillage can break up soil aggregates, leading to the loss of pore spaces and the creation of smaller particles that can become compacted over time. This can make it difficult for air, water, and nutrients to penetrate the soil, leading to reduced plant growth and yield. Additionally, continuous soil tillage can also lead to increased soil erosion, as the soil is left exposed to the elements without any cover or protection. This can result in the loss of topsoil and soil fertility, further exacerbating the negative effects on plant growth. In summary, continuous soil tillage can lead to the breakdown of soil structure, reduced plant growth and yield, and increased soil erosion.

Read lesson note on Soil Water And Soil Conservation (JAMB)

Read lesson note on Land Preparation And Soil Tillage (JAMB)

Soil Water And Soil Conservation

Land Preparation And Soil Tillage

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Question 35 Report

Dissemination of new ideas by agricultural extension workers can be effective if they

work with existing local

supply farmers with needed inputs

give financial support to farmers

are politically active

Answer Details

The dissemination of new ideas by agricultural extension workers can be effective if they work with existing local communities. Agricultural extension workers are professionals who provide information and resources to farmers and communities to improve agricultural practices and productivity. They can help to disseminate new ideas by working with local communities to understand their needs and preferences, and to tailor their messages and programs accordingly. By working with existing local communities, extension workers can build trust and rapport with farmers and gain a deeper understanding of their knowledge and practices. This can help to ensure that the new ideas being disseminated are relevant and applicable to local conditions, and that farmers are more likely to adopt and implement them. In contrast, simply supplying farmers with needed inputs or giving financial support may not be sufficient to ensure the success of new ideas. Farmers may not have the necessary knowledge or skills to use the inputs effectively, and financial support may not address underlying issues such as lack of knowledge or access to markets. Similarly, being politically active may not necessarily lead to effective dissemination of new ideas, as it may not address the needs and preferences of local communities. Therefore, working with existing local communities is crucial for the effective dissemination of new ideas by agricultural extension workers. It can help to ensure that the ideas are relevant, applicable, and adopted by farmers, leading to improved agricultural practices and productivity.

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Agricultural Extension

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Question 36 Report

Control of maize stem borer is most effective when

affected crops are uprooted and burnt

rodenticides are applied

nematicides are applied

fertilizers are applied before planting

Answer Details

Control of maize stem borer is most effective when affected crops are uprooted and burnt. This is because the maize stem borer is a pest that bores into the maize stem, thereby causing damage to the crop. When the affected crops are uprooted and burnt, it helps to prevent the spread of the pest to other crops in the farm. This method is considered more effective than the application of rodenticides, nematicides or fertilizers.

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Read lesson note on Weeds (JAMB)

Read lesson note on Crop Pests (JAMB)

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Crop Diseases

Weeds

Crop Pests

Farm Inputs

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Question 37 Report

The agricultural sector in West Africa is plagued with poverty because

farmers belong to cooperative societies

yields obtained per annum are relatively low

farmers have access to credit facilities

the weather is highly predictable

Answer Details

The agricultural sector in West Africa is plagued with poverty primarily because yields obtained per annum are relatively low. This low yield can be attributed to various factors such as poor soil fertility, inadequate or inappropriate use of inputs, inadequate access to water resources, and poor management practices. These factors lead to low productivity, low income, and a vicious cycle of poverty, which makes it difficult for farmers to invest in their farms, access credit facilities, and improve their livelihoods. Additionally, unpredictable weather conditions such as droughts, floods, and other natural disasters also contribute to the low productivity of the agricultural sector in West Africa, exacerbating the already existing problems. While cooperative societies can be helpful in promoting agricultural development, they alone are not sufficient to overcome the poverty challenge faced by West African farmers.

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Meaning And Importance Of Agricultural Ecology

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Question 38 Report

The function of the seed -tube of a seed drill is to

transport seeds from the metering device to the furrow opener

control the rate of placement of seeds in the soil

cover seeds placed in the soil

open the soil for seed placement

Answer Details

The function of the seed-tube of a seed drill is to transport seeds from the metering device to the furrow opener. A seed drill is a machine that is used for planting seeds in rows at a specific depth and spacing. The seed-tube is a component of the seed drill that connects the metering device, which measures and dispenses the seeds, to the furrow opener, which creates a groove in the soil for the seeds to be placed in. The seed-tube is responsible for transporting the seeds from the metering device to the furrow opener through a series of tubes or channels. It ensures that the seeds are delivered accurately and consistently to the correct location in the soil, which is important for ensuring uniform crop emergence and growth. Therefore, the function of the seed-tube is to transport seeds from the metering device to the furrow opener, where they can be placed in the soil at the correct depth and spacing for optimal plant growth.

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Read lesson note on Common Weeds (WAEC)

Mechanization And Sources Of Farm Power

Common Weeds

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Question 39 Report

The machine used for removing seeds from maize cobs is called a

mill

decorticator

winnower

sheller

Answer Details

The machine used for removing seeds from maize cobs is called a sheller. A sheller is a device that is specifically designed to remove the kernels or seeds from the cob of maize. The machine works by mechanically separating the kernels from the cob using a rotating cylinder or a set of rollers with ridges or teeth that grip and remove the seeds as they pass through. Once the kernels are separated, they can be used for a variety of purposes, such as for human or animal consumption, or for further processing into products like cornmeal or corn syrup.

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Mechanization And Sources Of Farm Power

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Question 40 Report

The most common method of acquiring land in West Africa is by

mortgage

communal ownership

leasehold

inheritance

Answer Details

The most common method of acquiring land in West Africa is by inheritance. Inheritance refers to the transfer of land ownership from a deceased person to their heirs. In West African societies, land is often viewed as a communal resource that belongs to the entire community, rather than being owned by individuals. Inheritance of land is governed by traditional customs and practices, and the rules may vary between different ethnic groups and regions. In some cases, the land may be inherited by the eldest son, while in other cases, it may be divided equally among all the children or passed down to a specific family member designated by the deceased. Inheritance of land can also have implications for women's rights and access to land. In some societies, women may be excluded from inheriting land, while in others, they may be entitled to inherit land through matrilineal or patrilineal systems. Overall, inheritance is the most common method of acquiring land in West Africa due to the importance of land as a communal resource and the prevalence of traditional customs and practices that govern land ownership.

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Meaning And Scope Of Agriculture

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Question 41 Report

The average gestation period in rabbits is

21 days

26 days

31 days

36 days

Answer Details

The correct answer is 31 days. Gestation period is the time between fertilization and birth of offspring. In rabbits, the gestation period ranges from 28 to 35 days, but the average is around 31 days. During this period, the female rabbit or doe will be pregnant and will give birth to a litter of kits. The gestation period may vary slightly depending on factors such as the breed of the rabbit, the age of the doe, and the environmental conditions.

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Question 42 Report

Theobroma cacao grows best in the

sudan savannah zone

humid rain forest zone

mangrove swamp forest zone

northern guinea savannah zone

Answer Details

Theobroma cacao, the plant from which cocoa beans are harvested for chocolate production, grows best in the humid rainforest zone. Theobroma cacao requires a warm, humid climate with abundant rainfall and good drainage. The humid rainforest zone provides these conditions, with an annual rainfall of 1500-2500mm and an average temperature of 25-28°C. In addition to the climate, the soil also plays an important role in the growth of cocoa. Cocoa plants require well-drained soils with a pH between 6.0 and 7.5. The soils in the humid rainforest zone are generally fertile and have good drainage, which makes them suitable for cocoa cultivation. Other factors that can affect the growth and yield of cocoa plants include pests and diseases, as well as proper management practices such as pruning, fertilization, and weed control. However, the climate and soil conditions in the humid rainforest zone provide the ideal environment for Theobroma cacao to grow and produce high-quality cocoa beans.

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Question 43 Report

Which of the following factors affect the supply of agricultural produce? I Improvement in technology II Increase in rainfall III Decrease in temperature IV input cost

l and ll only

l and lll only

l , ll and lll only

l, ll, lll and lV

Answer Details

The factors that affect the supply of agricultural produce are: I. Improvement in technology: This refers to the use of modern and advanced methods of farming such as mechanization, improved seeds, and fertilizers which can increase crop yields and ultimately increase the supply of agricultural produce. II. Increase in rainfall: This is a natural factor that affects agricultural production as it influences the growth of crops. When there is an increase in rainfall, it creates a favorable condition for crops to grow and develop which can lead to an increase in the supply of agricultural produce. III. Decrease in temperature: A decrease in temperature can have a negative impact on the growth of crops and can lead to a decrease in the supply of agricultural produce. IV. Input cost: The cost of inputs such as fertilizers, seeds, pesticides, labor, and machinery can have a direct impact on the supply of agricultural produce. An increase in input cost can reduce the supply of agricultural produce as farmers may not be able to afford the cost of production. Therefore, the factors that affect the supply of agricultural produce are I, II, III, and IV. The correct option is "l, ll, lll and lV".

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Read lesson note on Problems Of Agricultural Development And Possible Solutions (WAEC)

Read lesson note on Factors Of Production (WAEC)

Principles Of Supply

Problems Of Agricultural Development And Possible Solutions

Factors Of Production

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Question 44 Report

The correct sequence of the passage of feed through the digestive system of a ruminant is

reticulum → omasum → abomasum → rumen

rumen → omasum → abomasum → reticulum

omasum → abomasum → rumen → reticulum

rumen → reticulum → omasum → abomasum

Answer Details

Ruminants are mammals that have a four-chambered stomach specialized for digesting tough plant materials. The passage of feed through the digestive system of a ruminant begins in the rumen, where bacteria and other microorganisms break down the plant material through fermentation. The partially digested feed then passes into the reticulum, where it is regurgitated and rechewed (cud), before being swallowed again and passed through the omasum, which absorbs water and some nutrients. Finally, the feed enters the abomasum, which is the true stomach of the ruminant and functions like the stomach of other mammals, secreting acids and enzymes to further break down the feed. Therefore, the correct sequence of the passage of feed through the digestive system of a ruminant is rumen → reticulum → omasum → abomasum.

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Major Internal Organs Of Farm Animals

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Question 45 Report

Causal organismss of diseases in crop production do not include

viruses

bacteria

fungi

protozoa

Answer Details

The causal organisms of diseases in crop production do not include protozoa. Protozoa are single-celled microorganisms that are usually found in water and soil. Although they can cause diseases in animals and humans, they are not known to be significant pathogens in crop production. In contrast, viruses, bacteria, and fungi are all known to cause diseases in crops. Viruses are extremely small infectious agents that can only replicate inside living cells. They can cause a wide range of diseases in crops, including mosaic and yellowing diseases. Bacteria are also microscopic organisms that can cause diseases in crops, such as blight and wilt diseases. Fungi are multicellular organisms that can cause diseases in crops such as rust, smut, and powdery mildew. Therefore, the causal organisms of diseases in crop production do not include protozoa, while viruses, bacteria, and fungi are all significant pathogens in crop production.

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Read lesson note on Crop Pests (JAMB)

Crop Diseases

Crop Pests

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Question 46 Report

The following plants are forage grasses except

Pennisetun purpureum

Panicum maximum

Axonopus compressus

Calopogonium mucunoides

Answer Details

The plant that is not a forage grass among the given options is Calopogonium mucunoides. Forage grasses are plants that are primarily grown to be used as food for grazing animals, such as cows, sheep, and horses. Pennisetum purpureum, Panicum maximum, and Axonopus compressus are all examples of forage grasses that are commonly used for this purpose. On the other hand, Calopogonium mucunoides is a legume that is used as a cover crop or for soil improvement, but not typically used as a forage grass for grazing animals. Therefore, Calopogonium mucunoides is the plant that is not a forage grass among the given options.

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Read lesson note on Growth, Development And Reproduction (JAMB)

Pasture And Forage Crops

Growth, Development And Reproduction

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Question 47 Report

In hook and line fishing, the bait is fixed onto the

float

hook

line

pole

Answer Details

In hook and line fishing, the bait is fixed onto the hook. The hook is attached to the fishing line, which is held by a fishing rod or pole. The hook is usually baited with live or artificial bait to attract the fish. When the fish bites the bait, the angler can feel the tug on the line and use the rod to reel in the fish. The hook is designed to catch the fish by piercing its mouth or throat, allowing it to be lifted out of the water.

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Agricultural Extension

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Question 48 Report

Which of the following pairs are mass methods of extension?

Telephone calls and informal contacts

Letters and newspapers

Home visits and demonstrations

Radio and posters

Agricultural Extension

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Question 49 Report

What is the function of nitrosomonas bacteria in the nitrogen cycle?

Ammonification

Nitrification

Denitrification

Nitrogen fixation

Genetics

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Question 50 Report

Fowls is are debeaked in order to

reduce feed intake

make them grow faster

reduce cannibatlism

vitamin A

Answer Details

Fowls are debeaked in order to reduce cannibalism. Debeaking, also known as beak trimming, is a process of removing part of the beak of poultry birds like chickens, turkeys, and ducks. It is done to prevent the birds from pecking at each other and causing injuries or death, which can occur due to aggressive behaviour or stress in overcrowded conditions. By reducing the size and sharpness of the beak, debeaking can help to reduce the severity of injuries that may result from pecking, thereby reducing cannibalism. It is not done to make them grow faster or to increase the intake of vitamin A.

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WAEC SSCE - Agricultural Science - 2014 (Objective)