WAEC SSCE - Agricultural Science - 2020 (Objective)

Question 1 Report

The cropping system illustrated in the table is?

mixed cropping

crop rotation

shifting cultivation

land rotation Correct answer

Answer Details

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

Cropping Systems, Planting Patterns And Plant Density

View Answer

Question 2 Report

Which of the following crops is dicotyledonous?

Zea mays

Oryza sativa

Elaeis guineensis

vigna unguiculata Correct answer

Answer Details

The crop that is dicotyledonous from the given options is Vigna unguiculata, also known as cowpea. Dicotyledonous plants, also called dicots, are plants that have seeds with two cotyledons or embryonic leaves. These plants generally have broad leaves with veins that are arranged in a branched or net-like pattern. On the other hand, monocotyledonous plants, or monocots, have seeds with a single cotyledon or embryonic leaf. These plants typically have long, narrow leaves with veins that are parallel to each other. Among the given options, Zea mays (corn), Oryza sativa (rice), and Elaeis guineensis (oil palm) are monocotyledonous plants, while Vigna unguiculata (cowpea) is a dicotyledonous plant. Cowpea is an important legume crop that is widely cultivated for its high protein content and ability to fix nitrogen in the soil. It is commonly grown in tropical and subtropical regions of the world and is used for food, feed, and forage purposes.

Read lesson note on Genetics (JAMB)

Genetics

View Answer

Question 3 Report

Digestion in ruminants is mainly?

enzymatic

microbial

mastication and enzymatic

microbial and enzymatic Correct answer

Answer Details

Digestion in ruminants, such as cows and sheep, is mainly microbial and enzymatic. Ruminants have a four-chambered stomach that allows them to digest tough plant materials like cellulose. The first chamber, the rumen, is where microbial fermentation occurs. Bacteria, protozoa, and fungi in the rumen break down the cellulose and other complex carbohydrates in the food into simpler compounds that can be absorbed by the animal. Enzymes produced by the animal and microbes in the rumen also break down proteins and fats into simpler compounds that can be absorbed. The rumen also acts as a storage chamber, allowing the animal to regurgitate and re-chew their food (mastication) before swallowing it again for further digestion. The other three chambers of the ruminant stomach (reticulum, omasum, and abomasum) continue the enzymatic and microbial breakdown of the food before it moves into the small intestine for absorption of nutrients. In summary, digestion in ruminants is mainly microbial and enzymatic. The rumen, with its complex microbial community, plays a crucial role in breaking down complex carbohydrates in the diet, while enzymatic digestion of proteins and fats occurs throughout the digestive tract.

Read lesson note on Reproduction In Farm Animals (JAMB)

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

Reproduction In Farm Animals

Growth, Development And Reproduction

View Answer

Question 4 Report

The part which a bait is attached before lowering the tool in water is labelled?

III

I Correct answer

Answer Details

View Answer

Question 5 Report

Which of the following diseases of tomato is caused by nematode?

fusarium wilt Correct answer

root knot

leaf spot

leaf curl

Answer Details

Read lesson note on Crop Diseases (JAMB)

Crop Diseases

View Answer

Question 6 Report

If a farmer produces 9 bags of millet at an average cost of D80,000.00 per bag and sells each of the 9 bags at D90,000.00 the profit is?

D10,000.00 Correct answer

D80,000.00

D90,000.00

D170,000.00

Answer Details

Read lesson note on Basic Economic Principles (JAMB)

Read lesson note on Factors Of Production (WAEC)

Read lesson note on Agricultural Finance (WAEC)

Basic Economic Principles

Factors Of Production

Agricultural Finance

View Answer

Question 7 Report

The part labelled C in the graph is the?

quantity supplied

equilibrium price

quantity demanded

equilibrium point Correct answer

Answer Details

The part labeled "C" in a graph is the "equilibrium point". This is where the quantity of a good or service that consumers are willing and able to buy (i.e. the quantity demanded) is equal to the quantity that producers are willing and able to sell (i.e. the quantity supplied). In other words, it's the point where there is balance between the amount of a product that is being bought and sold, and there is no surplus or shortage.

Read lesson note on Principles Of Demand (WAEC)

Principles Of Demand

View Answer

Question 8 Report

Which of the following statements about threshing of rice are true?

I.Rice grains are separated from the panicle
II.Breakage of some grains could occur
III.The grains are polished

I and II Only

I and III Only

II and III Only

I, II and III Correct answer

Answer Details

Threshing is the process of separating rice grains from the panicle. This is usually done by beating the panicles to loosen the grains. So, the statement "Rice grains are separated from the panicle" is true and corresponds to option (A) and (D). During the threshing process, there is a possibility of breakage of some grains. This is because the grains are subjected to a lot of force, and some of them may be damaged. Therefore, the statement "Breakage of some grains could occur" is also true and corresponds to option (A) and (D). However, the statement "The grains are polished" is not true. Polishing is a separate process that is done after threshing to remove the outer layer of the grain. This is done to give the rice a shiny appearance and improve its texture. Therefore, option (B) and (C) are not correct. In conclusion, the correct options are either (A) or (D), which are I and II Only, or I, II and III.

Read lesson note on Farm Inputs (JAMB)

Farm Inputs

View Answer

Question 9 Report

The illustrated equipment is used for?

making drills Correct answer

marking stations

marking chain lengths

making holes for transplating

Answer Details

Read lesson note on Farm Tools And Equipment (WAEC)

Farm Tools And Equipment

View Answer

Question 10 Report

If the yield of cowpea is 750kg per hectare, calculate the yield of cowpea from a 20 hectare farm.

7,500kg

15,000kg Correct answer

22,500kg

37,500kg

Answer Details

The yield of cowpea from a farm depends on the area of the farm and the yield per hectare. Given that the yield of cowpea is 750kg per hectare, we can calculate the total yield from a 20-hectare farm by multiplying the yield per hectare by the total area of the farm. Therefore, the yield of cowpea from a 20-hectare farm would be: Yield = Yield per hectare × Area of the farm Yield = 750kg/hectare × 20 hectares Yield = 15,000kg So, the answer is 15,000kg.

View Answer

Question 11 Report

Which of the labelled parts enables the tool to float on water when fish is caught?

IV Correct answer

III

Answer Details

Read lesson note on Fisheries And Wildlife (JAMB)

Fisheries And Wildlife

View Answer

Question 12 Report

Which of the following statements is not a precaution measure in bee keeping?

the apiary should not be fenced to allow for proper ventilation Correct answer

the attendant should always wear protective clothing

warning signs should be placed near an apiary

locate apiaries far from human dwellings

Answer Details

The statement "the apiary should not be fenced to allow for proper ventilation" is not a correct precaution measure in beekeeping. While proper ventilation is important for the health of bees, fencing an apiary is an important precaution measure to protect both the bees and people who may be near the apiary. Fencing can help prevent people from accidentally disturbing the bees and protect them from potential predators. On the other hand, wearing protective clothing and placing warning signs near an apiary are indeed important precautions for beekeeping. And locating apiaries far from human dwellings can also help reduce the risk of bee-human interactions.

Read lesson note on Methods Of Cultivating Ornamental Plants (WAEC)

Methods Of Cultivating Ornamental Plants

View Answer

Question 13 Report

Which of the following tree species is suitable for making electric poles?

Indian almond

mango

silk cotton

teak Correct answer

Answer Details

Teak is the tree species that is suitable for making electric poles. Teak wood is known for its strength, durability, and resistance to decay and insects. These qualities make it a popular choice for outdoor structures such as electric poles. The wood is also able to withstand extreme weather conditions, making it a reliable option for supporting power lines. Additionally, teak is relatively easy to work with, making it a popular choice for construction projects. So, if you need to choose a tree species for making electric poles, teak is a great option to consider.

Read lesson note on Major Internal Organs Of Farm Animals (WAEC)

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

Major Internal Organs Of Farm Animals

Forest Management (Silviculture)

View Answer

Question 14 Report

When a gene is expressed in the phenotype in a homoxygous or heterogous form, that gene is said to be?

segregating

recessive

regeneration Correct answer

exploitation

Answer Details

Read lesson note on Genetics (JAMB)

Genetics

View Answer

Question 15 Report

The methods of rangeland improvement which ensure continuous herbage growth during the dry season are?

reseeding and pest control

controlled stocking and disease control

fertiliser application and irrigation Correct answer

rotational grazing and weed control

Answer Details

Read lesson note on Agro-forestry Practices In West Africa (WAEC)

Read lesson note on Rangeland And Pasture Management (WAEC)

Agro-forestry Practices In West Africa

Rangeland And Pasture Management

View Answer

Question 16 Report

Mechanical power is not usually required in?

soil tillage

fertilizer application

staking of yams Correct answer

planting of seeds

Answer Details

Read lesson note on Farm Power (WAEC)

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

Farm Power

Mechanization And Sources Of Farm Power

View Answer

Question 17 Report

The fencing and partitioning of a pastureland into paddocks is meant to?

suppress weeds that compete with pasture crops

control grazing and ensure regeneration of pasture Correct answer

allow free movement of ruminants on the pasture

prevent lodging of the pasture plants

Answer Details

The fencing and partitioning of a pastureland into paddocks is meant to control grazing and ensure the regeneration of pasture. By dividing the pasture into smaller areas or paddocks, farmers can control the movement of livestock and prevent overgrazing. This allows the pasture to recover and regrow, ensuring a sustainable source of food for the animals. Additionally, paddock grazing can improve soil health and reduce soil erosion, as livestock are concentrated in smaller areas for shorter periods of time. Ultimately, paddock grazing can lead to a healthier and more productive pasture, benefiting both the farmer and the animals.

Read lesson note on Pasture And Forage Crops (JAMB)

Pasture And Forage Crops

View Answer

Question 18 Report

The following bacteria are important in the nitrogen cycle except?

bacillus

nitrobacter

nitrosomonas

rhizobium Correct answer

Answer Details

Rhizobium is not directly involved in the nitrogen cycle. The nitrogen cycle is the process by which nitrogen is converted between different forms in the environment, such as from atmospheric nitrogen gas (N2) to ammonium (NH4+) and nitrate (NO3-) ions that plants can use for growth. This cycle involves a variety of microorganisms that play different roles in the process. Bacillus, Nitrobacter, and Nitrosomonas are all involved in the nitrogen cycle. Nitrosomonas converts ammonium to nitrite, and Nitrobacter converts nitrite to nitrate. Bacillus, on the other hand, plays a role in the decomposition of organic matter and the release of ammonium into the soil. Rhizobium is a soil bacteria that forms a symbiotic relationship with legume plants, helping them to convert atmospheric nitrogen into a form that the plant can use. While this process indirectly contributes to the nitrogen cycle, it is not directly involved in the conversion of nitrogen between different forms in the environment.

View Answer

Question 19 Report

A nation exports agricultural produce mainly to?

provide food Correct answer

create employment

earn foreign exchange

provide raw materials

Answer Details

Read lesson note on Marketing Of Agricultural Produce (WAEC)

Read lesson note on Marketing Of Agricultural Produce (JAMB)

Read lesson note on Basic Economic Principles (JAMB)

Marketing Of Agricultural Produce

Basic Economic Principles

View Answer

Question 20 Report

A cost effective way of disseminating urgent information to a large number of farmers at the same time is through?

demonstration

evaluation

mass media Correct answer

field trip

Answer Details

A cost-effective way of disseminating urgent information to a large number of farmers at the same time is through mass media. Mass media refers to various channels such as television, radio, newspapers, and social media that can reach a large audience at once. These channels can be used to broadcast urgent information, such as weather alerts, disease outbreaks, market prices, and new farming practices to farmers in different locations. By using mass media, farmers can receive information quickly and simultaneously, without the need for costly travel or physical demonstrations. This makes it an efficient way to disseminate information and promote adoption of new technologies, practices or policies that can improve farming productivity and livelihoods.

Read lesson note on Agricultural Extension (JAMB)

Read lesson note on Agricultural Extension (WAEC)

Agricultural Extension

View Answer

Question 21 Report

A total of 12,000kg of maize was demanded at N20 per kg while 8,000kg of it was demanded at N30 per kg. What is the percentage change in quantity demanded?

33% Correct answer

50%

67%

150%

Answer Details

To find the percentage change in quantity demanded, we need to calculate the difference between the initial quantity demanded and the final quantity demanded, divide that difference by the initial quantity demanded, and then multiply the result by 100%. The initial quantity demanded is 12,000kg, and the final quantity demanded is 8,000kg. Therefore, the difference is: 12,000kg - 8,000kg = 4,000kg To calculate the percentage change, we divide the difference by the initial quantity and multiply by 100%: (4,000kg / 12,000kg) x 100% = 33.33% Therefore, the answer is 33%. The percentage change in quantity demanded is a decrease of 33.33%. To further explain, the question is asking for the percentage change in the quantity of maize demanded. From the information given, we know that 12,000kg was demanded at N20 per kg and 8,000kg was demanded at N30 per kg. This means that the demand for maize decreased from 12,000kg to 8,000kg, which is a difference of 4,000kg. To find the percentage change, we divide this difference by the initial quantity demanded (12,000kg) and multiply by 100% to get the percentage change, which is 33.33%. This means that the quantity of maize demanded decreased by 33.33% due to the change in price.

Read lesson note on Principles Of Supply (WAEC)

Principles Of Supply

View Answer

Question 22 Report

In a brooder house, which of the following factors is monitored with the use of wet and dry hygrometer?

rainfall

temperature

relative humidity Correct answer

atmosphere pressure

Answer Details

The factor that is monitored with the use of wet and dry hygrometer in a brooder house is relative humidity. Relative humidity refers to the amount of moisture present in the air, expressed as a percentage of the maximum amount of moisture that the air could hold at a given temperature. In a brooder house, maintaining the correct relative humidity is essential for the health and well-being of the young birds being raised. A wet and dry hygrometer is a simple instrument used to measure relative humidity. It consists of two thermometers, one of which has a wet wick wrapped around its bulb. The wet wick is exposed to the air, and as the water evaporates, it cools the thermometer, causing the temperature to drop. The difference in temperature between the wet and dry thermometers is used to calculate the relative humidity. In a brooder house, the wet and dry hygrometer is used to ensure that the relative humidity is within the appropriate range for the age and type of birds being raised. Too high a humidity can lead to respiratory problems and the growth of harmful bacteria and fungi, while too low a humidity can cause dehydration and other health issues. By monitoring relative humidity with the wet and dry hygrometer, the caretakers of the brooder house can make adjustments to ventilation, heating, and other environmental factors as needed to maintain the optimal conditions for the birds' health and growth.

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

Read lesson note on Farm Planning (WAEC)

Anatomy And Physiology Of Farm Animals

Farm Planning

View Answer

Question 23 Report

The major objective of farm planning is to?

maximize the use of available resources

control insects pests of crops

control diseases among animals

reduce losses due to natural disasters Correct answer

Answer Details

Read lesson note on Farm Management (JAMB)

Read lesson note on Aquaculture (WAEC)

Farm Management

Aquaculture

View Answer

Question 24 Report

Quarantine measures in agriculture are aimed at?

regulating cost of importation of crops and animals

preventing the introduction of pests and diseases Correct answer

maintaining genetic purity of crops and animals

introducing new varieties of crops and breeds of animals

Answer Details

Read lesson note on Crop Diseases (JAMB)

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

Crop Diseases

Types And Classification Of Farm Animals

View Answer

Question 25 Report

An important characteristic of pigs is that they are?

highly prolific Correct answer

great milk producers

resistant to parasites

able to digest cellulose

Answer Details

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

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

Types And Classification Of Farm Animals

Anatomy And Physiology Of Farm Animals

View Answer

Question 26 Report

Tapeworm, liver fluke and roundworm can be controlled by?

flushing

drenching Correct answer

dipping

fumigation

Answer Details

Tapeworms, liver flukes, and roundworms are all types of parasites that can infect both animals and humans. These parasites can cause various health problems and even death in severe cases. Fortunately, there are several methods to control these parasites: 1. Flushing: Flushing involves cleaning out the digestive system of an animal to remove any parasites. This can be done by giving the animal a special diet or medication that will cause them to excrete the parasites from their system. 2. Drenching: Drenching involves giving an animal medication orally to kill any parasites in their system. This medication can come in the form of a pill or liquid. 3. Dipping: Dipping involves immersing an animal in a solution that kills any parasites on their skin. This method is typically used for external parasites, such as ticks or lice. 4. Fumigation: Fumigation involves using chemicals to kill parasites in an enclosed environment, such as a barn or stable. This method is not typically used for controlling parasites in animals. In summary, the most effective methods to control tapeworms, liver flukes, and roundworms in animals are flushing and drenching. Dipping is useful for external parasites, while fumigation is not typically used for controlling parasites in animals. It's important to consult a veterinarian to determine the best method for controlling parasites in your animals.

Read lesson note on Diseases Of Farm Animals (WAEC)

Diseases Of Farm Animals

View Answer

Question 27 Report

The following crops are fiber crops except?

cotton

onion Correct answer

jute

sisal

Answer Details

The crop that is not a fiber crop is onion. Fiber crops are plants grown specifically for their fibers, which can be used to make textiles, ropes, paper, and other materials. Cotton, jute, and sisal are all examples of fiber crops. Cotton is one of the most commonly used fiber crops and is widely used to make clothing, towels, and sheets. Jute is a plant that produces strong and durable fibers, which are used to make burlap sacks and rope. Sisal is another plant that produces fibers that are commonly used for rope and twine. On the other hand, onion is a vegetable crop that is primarily grown for its edible bulbs. While onion leaves and stems can be used to make fibers, they are not typically grown or harvested for this purpose. Instead, onion fibers are usually considered a byproduct of onion production, and are not used on a large scale. Therefore, onion is not considered a fiber crop.

Read lesson note on Crop Improvement (WAEC)

Crop Improvement

View Answer

Question 28 Report

The structure of sandy soils can be described as?

platy

crumby

single-grained Correct answer

bloc

Answer Details

View Answer

Question 29 Report

Which of the following statements is not a reason for feeding farm animals?

production of energy for work

building up of body tissue

production of inorganic manure Correct answer

protection of animals from diseases

Answer Details

The statement that is not a reason for feeding farm animals is "production of inorganic manure." Feeding farm animals is necessary to provide them with the nutrients they need for energy, growth, and maintenance of body tissues. It is also important to protect them from diseases. However, the production of inorganic manure is a byproduct of the digestion process in animals, and it is not the primary reason for feeding them. Feeding farm animals has various benefits, including increasing their productivity, improving their health, and ensuring the quality of the products they produce, such as meat, milk, and eggs. Inorganic manure, on the other hand, is a secondary benefit that farmers can obtain from their animals, which can be used as fertilizer for crops. Therefore, while the production of inorganic manure is a positive outcome of feeding farm animals, it is not the main reason for doing so.

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

Read lesson note on Animal Reproduction (WAEC)

Animal Feeds And Feed Stuffs And Their Local Sources

Animal Reproduction

View Answer

Question 30 Report

Which of the following statement is not true about farming in West Africa?

farm labour is highly inefficient

farm workers are poorly paid

getting reliable labour is difficult

mechanisation is fully adopted Correct answer

Answer Details

The statement that is not true about farming in West Africa is "mechanisation is fully adopted." Farming in West Africa is predominantly manual, and farm labour is highly inefficient. This is because most farmers in the region lack access to modern farming technologies, such as tractors, harvesters, and irrigation systems. As a result, they rely on traditional farming methods, which are time-consuming and labor-intensive. Farm workers in West Africa are often poorly paid, and getting reliable labour is difficult. Many farmers in the region cannot afford to pay their workers a decent wage, and this, coupled with the lack of access to social protection programs, makes it difficult for farm workers to make ends meet. However, contrary to the options given, mechanisation is not fully adopted in West Africa. The high cost of modern farming equipment and limited access to credit facilities means that many farmers cannot afford to purchase modern farm equipment. This is compounded by the fact that the terrain in many parts of West Africa is not suitable for mechanised farming. In summary, while farm labour is highly inefficient, farm workers are poorly paid, and getting reliable labour is difficult, mechanisation is not fully adopted in West Africa.

Read lesson note on Labour Management (JAMB)

Read lesson note on Importance Of Agriculture (JAMB)

Labour Management

Importance Of Agriculture

View Answer

Question 31 Report

The deficiency of nitrogen in a maize plant can be corrected by applying?

potassium chloride

muriate of potash

sulphate of ammonia Correct answer

calcium carbonate

Answer Details

The correct option to correct nitrogen deficiency in maize plants is sulphate of ammonia. Nitrogen is an essential nutrient for plant growth and plays a key role in the formation of chlorophyll and the production of proteins. When a maize plant lacks nitrogen, its leaves may turn yellow and stunted growth may occur. Sulphate of ammonia is a fertilizer that contains nitrogen in the form of ammonium sulphate. When applied to the soil, the ammonium sulphate breaks down and releases nitrogen, which is taken up by the roots of the maize plant. This helps to correct the nitrogen deficiency and improve the overall health and growth of the plant.

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

Meaning And Scope Of Agriculture

View Answer

Question 32 Report

An agricultural system which combines crop production with forest establishment is known as?

plantation farming

taungya farming Correct answer

arable farming

mixed farming

Answer Details

The agricultural system that combines crop production with forest establishment is called "taungya farming." In taungya farming, farmers grow crops like maize, beans, or vegetables alongside the establishment of a forest. The forest is established by planting trees in between the crops, which helps to improve soil quality, reduce erosion, and provide shade for the crops. Once the crops have been harvested, the trees continue to grow, providing timber and other forest products. This system is commonly used in tropical regions where there is a high demand for food and timber but limited land available for cultivation.

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

Forest Management (Silviculture)

View Answer

Question 33 Report

Uncontrolled burning of forests encourages?

deforestation Correct answer

afforestation

regeneration

exploitation

Answer Details

Read lesson note on Forest Management (WAEC)

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

Forest Management

Forest Management (Silviculture)

View Answer

Question 34 Report

Crops which grow and mature within few weeks of their cultivation are called?

annual crops

ephemeral crops Correct answer

perennial crops

biennial crops

Answer Details

The crops which grow and mature within a few weeks of their cultivation are called ephemeral crops. These crops have a very short life cycle and complete their growth and development quickly. They typically require less time and effort to cultivate and can provide a quick harvest. Examples of ephemeral crops include lettuce, radishes, and spinach, which can be harvested in as little as 4-6 weeks after planting. Ephemeral crops are typically grown in cooler months or in regions with mild climates, as they can be sensitive to extreme heat and moisture. In contrast, annual crops complete their life cycle within a year, biennial crops take two years to mature, and perennial crops can continue to grow and produce for several years.

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

Read lesson note on Husbandry Of Selected Crops (WAEC)

Animal Feeds And Feed Stuffs And Their Local Sources

Husbandry Of Selected Crops

View Answer

Question 35 Report

The yield of cocoa trees is not influenced by?

pest infestation

fertiliser application

method of harvesting Correct answer

method of soil tillage

Answer Details

Read lesson note on Crop Diseases (JAMB)

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

Read lesson note on Genetics (JAMB)

Crop Diseases

Land Preparation And Soil Tillage

Genetics

View Answer

Question 36 Report

A crop that can be propagated by stem cutting is?

plaintain

pepper

cassava Correct answer

carrot

Answer Details

Read lesson note on Plant Propagation Methods (JAMB)

Plant Propagation Methods

View Answer

Question 37 Report

Which of the following methods of irrigation is most efficient in terms of water conservation?

flood irrigation

furrow irrigation

border irrigation

drip irrigation Correct answer

Answer Details

Of the given options, drip irrigation is the most efficient method of irrigation in terms of water conservation. Drip irrigation involves the slow and steady release of water directly onto the roots of the plants. This method reduces water waste, as the water goes exactly where it is needed and minimizes evaporation. Additionally, because the water is delivered directly to the roots, there is less runoff and less chance of water being lost to erosion. In comparison, flood irrigation involves flooding a field with water, which can lead to water loss through runoff and evaporation. Furrow irrigation and border irrigation are similar to flood irrigation in that they involve the flooding of fields, but they are less efficient than drip irrigation. Therefore, for efficient water conservation, drip irrigation is the best method out of the given options.

View Answer

Question 38 Report

Which of the following crops can conveniently replace maize in the table?

cassava

cashew

mango

millet Correct answer

Answer Details

The crop that can conveniently replace maize in the table is millet. Millet is a small, drought-resistant grain that grows well in hot, arid climates. It is a good source of nutrients such as protein, fiber, vitamins, and minerals. Millet can be cooked in a variety of ways, including boiling, steaming, roasting, or grinding into flour for use in baking. Millet is a great substitute for maize because it is a versatile crop that can be used in many of the same ways as maize. For example, millet can be used to make porridge, bread, cakes, and even beer, just like maize. Millet is also more tolerant to drought and can grow in areas where maize may struggle to thrive. Overall, millet is a nutritious and versatile crop that can be a suitable replacement for maize in many contexts.

Read lesson note on Crop Improvement (WAEC)

Crop Improvement

View Answer

Question 39 Report

The illustrated equipment is called?

arrow

harpoon

wooden peg

ranging pole Correct answer

Answer Details

The illustrated equipment is called a ranging pole. A ranging pole is a long, straight stick or rod used to measure distances or to determine the position of something. It can be used in surveying, construction, or any other field where precise measurements are needed. The pole is held vertically and its shadow is used to determine the angle of the sun or other reference points, allowing the user to make accurate measurements. The ranging pole is a simple and effective tool that has been used for centuries to help people measure and map the world around them.

Read lesson note on Farm Tools And Equipment (WAEC)

Farm Tools And Equipment

View Answer

Question 40 Report

A farmer whose production exceeds point C will experience

surplus to the market Correct answer

shortfalls in supply

decrease in cost of production

decrease in revenue generated

Answer Details

A farmer whose production exceeds point C will experience a surplus to the market. In economics, point C represents the equilibrium point where the supply of a product matches the demand for that product. If a farmer's production exceeds this equilibrium point, it means that they are producing more than what is demanded in the market. This surplus will result in a decrease in the price of the product, as the farmer tries to sell the excess supply. This decrease in price could lead to a decrease in revenue generated for the farmer. However, if the farmer can find alternative markets or ways to store the excess supply, they can still make a profit from the surplus. In some cases, a surplus could also lead to a decrease in the cost of production, as the farmer tries to reduce their expenses to maintain profitability. Nonetheless, a surplus to the market is generally considered better than a shortfall in supply, as it means that there is an abundance of the product available for consumers.

Read lesson note on Principles Of Demand (WAEC)

Read lesson note on Agricultural Extension (WAEC)

Read lesson note on Factors Of Production (WAEC)

Principles Of Demand

Agricultural Extension

Factors Of Production

View Answer

Question 41 Report

An important reason for staking yam is to?

expose the leaves to sunlight Correct answer

prevent water logging on the farm

enhance the formation of leaves

expose the flowers to pollination

Answer Details

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

Meaning And Scope Of Agriculture

View Answer

Question 42 Report

If 30 eggs make up a crate of eggs, how many eggs are in 2 packs assuming a pack contains 10 crates of eggs?

200 eggs

300 eggs

400 eggs

600 eggs Correct answer

Answer Details

A pack contains 10 crates of eggs, and each crate contains 30 eggs. To find the total number of eggs in 2 packs, we need to multiply the number of crates in 2 packs by the number of eggs in each crate. So, 2 packs contain 2 x 10 = 20 crates of eggs. Multiplying the number of crates (20) by the number of eggs per crate (30), we get: 20 x 30 = 600 Therefore, there are 600 eggs in 2 packs assuming a pack contains 10 crates of eggs.

Read lesson note on Farm Surveying Equipment (WAEC)

Farm Surveying Equipment

View Answer

Question 43 Report

Rickets in farm animals can be controlled by?

feeding carbohydrates to the animals

feeding animals with quality grasses and legumes

adding yeast and vegetables to animal feed

adding fish meal and oyster shell to animal feed Correct answer

Answer Details

View Answer

Question 44 Report

Water which rises above the water table in the soil and is held in fine medium pores between soil particles by surface tension is?

hygroscopic water

gravitational water

capillary water Correct answer

percolating water

Answer Details

The water which rises above the water table in the soil and is held in fine medium pores between soil particles by surface tension is called "capillary water". Capillary water is able to rise above the water table because of the combined forces of adhesion (attraction between water and soil particles) and cohesion (attraction between water molecules). These forces enable water to move upwards through narrow pores against the force of gravity. In simpler terms, imagine a sponge dipped in water. The water rises up the sponge through capillary action because the tiny spaces between the sponge's fibers are able to hold the water due to surface tension. Similarly, in soil, the capillary action causes water to move upwards against gravity and be held in the spaces between soil particles. This capillary water is important for plant growth as it is the water that is available to plants for uptake through their roots.

View Answer

Question 45 Report

An oven dried soil sample of mass 8g had a mass of 1.6g after it was completely burnt. Determine the percentage of humus in the soil sample.

6.4%

9.6%

20%

80% Correct answer

Answer Details

To determine the percentage of humus in the soil sample, we need to first calculate the mass of the humus that was present in the original soil sample. Humus is the organic matter in soil that remains after the decomposition of plant and animal residues. The mass of the humus in the original soil sample can be calculated by subtracting the mass of the burnt soil from the mass of the oven-dried soil: Mass of humus = Mass of oven-dried soil - Mass of burnt soil Mass of humus = 8 g - 1.6 g Mass of humus = 6.4 g Therefore, the mass of humus in the soil sample is 6.4 g. To calculate the percentage of humus in the soil sample, we need to divide the mass of humus by the mass of the original soil sample and then multiply by 100: Percentage of humus = (Mass of humus / Mass of original soil sample) x 100% Percentage of humus = (6.4 g / 8 g) x 100% Percentage of humus = 80% Therefore, the percentage of humus in the soil sample is 80%. So, option D is the correct answer.

View Answer

Question 46 Report

A pest that attacks stored maize grain is?

mirid

rodent Correct answer

grasshopper

aphid

Answer Details

A pest that attacks stored maize grain is a rodent. Rodents such as mice and rats are attracted to stored grains like maize because they provide a source of food and shelter. These pests can cause significant damage to stored maize grain by feeding on the kernels and contaminating the grain with their feces and urine, which can lead to mold growth and spoilage. Infestations can also result in significant economic losses for farmers and food storage facilities. Therefore, it is important to implement effective pest control measures to prevent and manage rodent infestations in stored maize grain.

Read lesson note on Crop Diseases (JAMB)

Read lesson note on Crop Pests (JAMB)

Crop Diseases

Crop Pests

View Answer

Question 47 Report

Determine the ratio of nutrients in NPK 5-10-15.

1:2:2

1:2:3 Correct answer

1:3:1

2:1:3

Answer Details

NPK 5-10-15 is a type of fertilizer that contains three important nutrients for plant growth: nitrogen (N), phosphorus (P), and potassium (K). The three numbers on the label, separated by hyphens, indicate the percentage of each nutrient present in the fertilizer. In this case, NPK 5-10-15 means that the fertilizer contains 5% nitrogen, 10% phosphorus, and 15% potassium. To determine the ratio of these nutrients, we need to divide each percentage by the lowest percentage to get the simplest whole number ratio. In this case, the lowest percentage is 5%, so we divide each percentage by 5%. 5% nitrogen ÷ 5% = 1 10% phosphorus ÷ 5% = 2 15% potassium ÷ 5% = 3 Therefore, the ratio of nutrients in NPK 5-10-15 is 1:2:3, which means that for every 1 part of nitrogen, there are 2 parts of phosphorus and 3 parts of potassium in the fertilizer. This ratio is important because different plants require different amounts of nutrients, and fertilizers with different ratios can be used to target specific nutrient needs.

Read lesson note on Crop Improvement (WAEC)

Read lesson note on Maintenance Practices And Precautionary Measures (WAEC)

Crop Improvement

Maintenance Practices And Precautionary Measures

View Answer

Question 48 Report

Which factor of production has the following characteristics?

I.Free gift of nature
II.Limited in supply
III.Immobile

land Correct answer

labour

capital

entrepreneur

Answer Details

The factor of production that has the characteristics of being a free gift of nature, limited in supply, and immobile is land. "Free gift of nature" refers to the fact that land is a natural resource that is not created by humans. It includes all the gifts of nature such as water bodies, forests, mineral deposits, and soil. "Limited in supply" means that there is a finite amount of land available, and it cannot be produced or manufactured by humans. Therefore, the supply of land is fixed. "Immobile" means that land cannot be moved from one place to another. It is fixed in location, and its location is an essential factor in determining its value. Taken together, these characteristics make land a unique factor of production. Unlike other factors of production, such as labor or capital, land is not produced or manufactured by human effort. It is a fixed and finite resource that is essential for many economic activities, including agriculture, mining, and construction. Therefore, land is a critical resource for economic development, and its scarcity and immobility make it a valuable and limited resource. Thus, land is the factor of production that has the given characteristics.

Read lesson note on Factors Of Production (WAEC)

Factors Of Production

View Answer

Question 49 Report

Igneous rocks can easily be identified through their?

glassy apperance

coarse texture Correct answer

stratified layers

fossil contents

Answer Details

Igneous rocks can be identified by their texture and mineral composition. If the rock has a smooth, glass-like surface, it has a "glassy appearance." If the rock has a rough, uneven surface with large crystals, it has a "coarse texture." If the rock has visible layers, it has a "stratified" appearance. If the rock contains fossils, it is not an igneous rock, as fossils form in sedimentary rocks, not in rocks formed from molten magma.

Read lesson note on Rocks (WAEC)

Rocks

View Answer

Question 50 Report

Calculate the area of the farmland.

0.32ha

0.36ha Correct answer

0.47ha

0.52ha

Answer Details

To calculate the area of the farmland, we need to know the dimensions of the land. However, as we are only given the area of the land in hectares, we cannot determine the length and width of the land directly. Hectares are a unit of area commonly used to measure land. One hectare is equal to 10,000 square meters or approximately 2.47 acres. Therefore, to calculate the area of the farmland in square meters, we can multiply the given area in hectares by 10,000. For example, if the given area is 0.32 hectares, we can calculate the area in square meters as follows: Area in square meters = 0.32 hectares x 10,000 square meters/hectare Area in square meters = 3,200 square meters Similarly, we can calculate the area in square meters for each given option and compare them to determine which one is the largest. The largest area in square meters corresponds to the largest option in hectares.

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

Read lesson note on Farm Surveying And Farmstead Planning (JAMB)

Soil Water And Soil Conservation

Farm Surveying And Farmstead Planning

View Answer






Press & Hold to Drag Around
Click Here to Close